1301 lines
54 KiB
Scheme
1301 lines
54 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2012, 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (guix derivations)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-9)
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#:use-module (srfi srfi-9 gnu)
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#:use-module (srfi srfi-26)
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#:use-module (srfi srfi-34)
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#:use-module (srfi srfi-35)
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#:use-module (rnrs io ports)
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#:use-module (rnrs bytevectors)
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#:use-module (ice-9 match)
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#:use-module (ice-9 rdelim)
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#:use-module (ice-9 vlist)
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#:use-module (guix store)
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#:use-module (guix utils)
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#:use-module (guix combinators)
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#:use-module (guix monads)
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#:use-module (guix hash)
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#:use-module (guix base32)
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#:use-module (guix records)
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#:use-module (guix sets)
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#:export (<derivation>
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derivation?
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derivation-outputs
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derivation-inputs
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derivation-sources
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derivation-system
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derivation-builder
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derivation-builder-arguments
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derivation-builder-environment-vars
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derivation-file-name
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derivation-prerequisites
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derivation-prerequisites-to-build
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<derivation-output>
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derivation-output?
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derivation-output-path
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derivation-output-hash-algo
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derivation-output-hash
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derivation-output-recursive?
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<derivation-input>
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derivation-input?
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derivation-input-path
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derivation-input-sub-derivations
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derivation-input-output-paths
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valid-derivation-input?
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&derivation-error
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derivation-error?
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derivation-error-derivation
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&derivation-missing-output-error
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derivation-missing-output-error?
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derivation-missing-output
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derivation-name
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derivation-output-names
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fixed-output-derivation?
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offloadable-derivation?
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substitutable-derivation?
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substitution-oracle
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derivation-hash
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read-derivation
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write-derivation
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derivation->output-path
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derivation->output-paths
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derivation-path->output-path
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derivation-path->output-paths
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derivation
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map-derivation
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build-derivations
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built-derivations
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file-search-error?
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file-search-error-file-name
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file-search-error-search-path
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search-path*
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module->source-file-name
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build-expression->derivation)
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;; Re-export it from here for backward compatibility.
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#:re-export (%guile-for-build))
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;;;
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;;; Error conditions.
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;;;
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(define-condition-type &derivation-error &nix-error
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derivation-error?
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(derivation derivation-error-derivation))
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(define-condition-type &derivation-missing-output-error &derivation-error
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derivation-missing-output-error?
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(output derivation-missing-output))
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;;;
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;;; Nix derivations, as implemented in Nix's `derivations.cc'.
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;;;
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(define-record-type <derivation>
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(make-derivation outputs inputs sources system builder args env-vars
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file-name)
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derivation?
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(outputs derivation-outputs) ; list of name/<derivation-output> pairs
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(inputs derivation-inputs) ; list of <derivation-input>
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(sources derivation-sources) ; list of store paths
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(system derivation-system) ; string
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(builder derivation-builder) ; store path
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(args derivation-builder-arguments) ; list of strings
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(env-vars derivation-builder-environment-vars) ; list of name/value pairs
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(file-name derivation-file-name)) ; the .drv file name
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(define-record-type <derivation-output>
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(make-derivation-output path hash-algo hash recursive?)
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derivation-output?
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(path derivation-output-path) ; store path
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(hash-algo derivation-output-hash-algo) ; symbol | #f
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(hash derivation-output-hash) ; bytevector | #f
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(recursive? derivation-output-recursive?)) ; Boolean
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(define-record-type <derivation-input>
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(make-derivation-input path sub-derivations)
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derivation-input?
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(path derivation-input-path) ; store path
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(sub-derivations derivation-input-sub-derivations)) ; list of strings
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(set-record-type-printer! <derivation>
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(lambda (drv port)
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(format port "#<derivation ~a => ~a ~a>"
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(derivation-file-name drv)
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(string-join
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(map (match-lambda
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((_ . output)
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(derivation-output-path output)))
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(derivation-outputs drv)))
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(number->string (object-address drv) 16))))
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(define (derivation-name drv)
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"Return the base name of DRV."
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(let ((base (store-path-package-name (derivation-file-name drv))))
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(string-drop-right base 4)))
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(define (derivation-output-names drv)
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"Return the names of the outputs of DRV."
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(match (derivation-outputs drv)
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(((names . _) ...)
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names)))
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(define (fixed-output-derivation? drv)
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"Return #t if DRV is a fixed-output derivation, such as the result of a
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download with a fixed hash (aka. `fetchurl')."
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(match drv
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(($ <derivation>
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(("out" . ($ <derivation-output> _ (? symbol?) (? bytevector?)))))
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#t)
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(_ #f)))
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(define (derivation-input-output-paths input)
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"Return the list of output paths corresponding to INPUT, a
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<derivation-input>."
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(match input
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(($ <derivation-input> path sub-drvs)
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(map (cut derivation-path->output-path path <>)
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sub-drvs))))
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(define (valid-derivation-input? store input)
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"Return true if INPUT is valid--i.e., if all the outputs it requests are in
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the store."
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(every (cut valid-path? store <>)
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(derivation-input-output-paths input)))
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(define* (derivation-prerequisites drv #:optional (cut? (const #f)))
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"Return the list of derivation-inputs required to build DRV, recursively.
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CUT? is a predicate that is passed a derivation-input and returns true to
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eliminate the given input and its dependencies from the search. An example of
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search a predicate is 'valid-derivation-input?'; when it is used as CUT?, the
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result is the set of prerequisites of DRV not already in valid."
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(let loop ((drv drv)
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(result '())
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(input-set (set)))
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(let ((inputs (remove (lambda (input)
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(or (set-contains? input-set input)
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(cut? input)))
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(derivation-inputs drv))))
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(fold2 loop
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(append inputs result)
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(fold set-insert input-set inputs)
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(map (lambda (i)
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(call-with-input-file (derivation-input-path i)
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read-derivation))
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inputs)))))
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(define (offloadable-derivation? drv)
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"Return true if DRV can be offloaded, false otherwise."
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(match (assoc "preferLocalBuild"
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(derivation-builder-environment-vars drv))
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(("preferLocalBuild" . "1") #f)
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(_ #t)))
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(define (substitutable-derivation? drv)
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"Return #t if DRV can be substituted."
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(match (assoc "allowSubstitutes"
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(derivation-builder-environment-vars drv))
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(("allowSubstitutes" . value)
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(string=? value "1"))
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(_ #t)))
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(define (derivation-output-paths drv sub-drvs)
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"Return the output paths of outputs SUB-DRVS of DRV."
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(match drv
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(($ <derivation> outputs)
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(map (lambda (sub-drv)
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(derivation-output-path (assoc-ref outputs sub-drv)))
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sub-drvs))))
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(define* (substitution-oracle store drv
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#:key (mode (build-mode normal)))
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"Return a one-argument procedure that, when passed a store file name,
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returns #t if it's substitutable and #f otherwise. The returned procedure
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knows about all substitutes for all the derivations listed in DRV, *except*
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those that are already valid (that is, it won't bother checking whether an
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item is substitutable if it's already on disk); it also knows about their
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prerequisites, unless they are themselves substitutable.
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Creating a single oracle (thus making a single 'substitutable-paths' call) and
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reusing it is much more efficient than calling 'has-substitutes?' or similar
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repeatedly, because it avoids the costs associated with launching the
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substituter many times."
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(define valid?
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(cut valid-path? store <>))
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(define valid-input?
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(cut valid-derivation-input? store <>))
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(define (dependencies drv)
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;; Skip prerequisite sub-trees of DRV whose root is valid. This allows us
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;; to ask the substituter for just as much as needed, instead of asking it
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;; for the whole world, which can be significantly faster when substitute
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;; info is not already in cache.
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(append-map derivation-input-output-paths
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(derivation-prerequisites drv valid-input?)))
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(let* ((paths (delete-duplicates
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(concatenate
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(fold (lambda (drv result)
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(let ((self (match (derivation->output-paths drv)
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(((names . paths) ...)
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paths))))
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(cond ((eqv? mode (build-mode check))
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(cons (dependencies drv) result))
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((every valid? self)
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result)
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(else
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(cons* self (dependencies drv) result)))))
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'()
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drv))))
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(subst (list->set (substitutable-paths store paths))))
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(cut set-contains? subst <>)))
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(define* (derivation-prerequisites-to-build store drv
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#:key
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(mode (build-mode normal))
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(outputs
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(derivation-output-names drv))
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(substitutable?
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(substitution-oracle store
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(list drv)
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#:mode mode)))
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"Return two values: the list of derivation-inputs required to build the
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OUTPUTS of DRV and not already available in STORE, recursively, and the list
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of required store paths that can be substituted. SUBSTITUTABLE? must be a
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one-argument procedure similar to that returned by 'substitution-oracle'."
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(define built?
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(cut valid-path? store <>))
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(define input-built?
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(compose (cut any built? <>) derivation-input-output-paths))
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(define input-substitutable?
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;; Return true if and only if all of SUB-DRVS are subsitutable. If at
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;; least one is missing, then everything must be rebuilt.
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(compose (cut every substitutable? <>) derivation-input-output-paths))
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(define (derivation-built? drv* sub-drvs)
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;; In 'check' mode, assume that DRV is not built.
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(and (not (and (eqv? mode (build-mode check))
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(eq? drv* drv)))
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(every built? (derivation-output-paths drv* sub-drvs))))
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(define (derivation-substitutable? drv sub-drvs)
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(and (substitutable-derivation? drv)
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(every substitutable? (derivation-output-paths drv sub-drvs))))
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(let loop ((drv drv)
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(sub-drvs outputs)
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(build '())
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(substitute '()))
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(cond ((derivation-built? drv sub-drvs)
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(values build substitute))
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((derivation-substitutable? drv sub-drvs)
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(values build
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(append (derivation-output-paths drv sub-drvs)
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substitute)))
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(else
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(let ((build (if (substitutable-derivation? drv)
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build
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(cons (make-derivation-input
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(derivation-file-name drv) sub-drvs)
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build)))
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(inputs (remove (lambda (i)
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(or (member i build) ; XXX: quadratic
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(input-built? i)
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(input-substitutable? i)))
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(derivation-inputs drv))))
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(fold2 loop
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(append inputs build)
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(append (append-map (lambda (input)
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(if (and (not (input-built? input))
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(input-substitutable? input))
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(derivation-input-output-paths
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input)
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'()))
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(derivation-inputs drv))
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substitute)
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(map (lambda (i)
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(call-with-input-file (derivation-input-path i)
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read-derivation))
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inputs)
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(map derivation-input-sub-derivations inputs)))))))
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(define (%read-derivation drv-port)
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;; Actually read derivation from DRV-PORT.
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(define comma (string->symbol ","))
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(define (ununquote x)
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(match x
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(('unquote x) (ununquote x))
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((x ...) (map ununquote x))
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(_ x)))
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(define (outputs->alist x)
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(fold-right (lambda (output result)
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(match output
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((name path "" "")
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(alist-cons name
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(make-derivation-output path #f #f #f)
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result))
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((name path hash-algo hash)
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;; fixed-output
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(let* ((rec? (string-prefix? "r:" hash-algo))
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(algo (string->symbol
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(if rec?
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(string-drop hash-algo 2)
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hash-algo)))
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(hash (base16-string->bytevector hash)))
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(alist-cons name
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(make-derivation-output path algo
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hash rec?)
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result)))))
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'()
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x))
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(define (make-input-drvs x)
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(fold-right (lambda (input result)
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(match input
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((path (sub-drvs ...))
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(cons (make-derivation-input path sub-drvs)
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result))))
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'()
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x))
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;; The contents of a derivation are typically ASCII, but choosing
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;; UTF-8 allows us to take the fast path for Guile's `scm_getc'.
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(set-port-encoding! drv-port "UTF-8")
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(let loop ((exp (read drv-port))
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(result '()))
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(match exp
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((? eof-object?)
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(let ((result (reverse result)))
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(match result
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(('Derive ((outputs ...) (input-drvs ...)
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(input-srcs ...)
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(? string? system)
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(? string? builder)
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((? string? args) ...)
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((var value) ...)))
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(make-derivation (outputs->alist outputs)
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(make-input-drvs input-drvs)
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input-srcs
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system builder args
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(fold-right alist-cons '() var value)
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(port-filename drv-port)))
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(_
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(error "failed to parse derivation" drv-port result)))))
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((? (cut eq? <> comma))
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(loop (read drv-port) result))
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(_
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(loop (read drv-port)
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(cons (ununquote exp) result))))))
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(define read-derivation
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(let ((cache (make-weak-value-hash-table 200)))
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(lambda (drv-port)
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"Read the derivation from DRV-PORT and return the corresponding
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<derivation> object."
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;; Memoize that operation because `%read-derivation' is quite expensive,
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;; and because the same argument is read more than 15 times on average
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;; during something like (package-derivation s gdb).
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(let ((file (and=> (port-filename drv-port) basename)))
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(or (and file (hash-ref cache file))
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(let ((drv (%read-derivation drv-port)))
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(hash-set! cache file drv)
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drv))))))
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(define-inlinable (write-sequence lst write-item port)
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;; Write each element of LST with WRITE-ITEM to PORT, separating them with a
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;; comma.
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(match lst
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(()
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#t)
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((prefix (... ...) last)
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(for-each (lambda (item)
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(write-item item port)
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(display "," port))
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prefix)
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(write-item last port))))
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(define-inlinable (write-list lst write-item port)
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;; Write LST as a derivation list to PORT, using WRITE-ITEM to write each
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;; element.
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(display "[" port)
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(write-sequence lst write-item port)
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(display "]" port))
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(define-inlinable (write-tuple lst write-item port)
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;; Same, but write LST as a tuple.
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(display "(" port)
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(write-sequence lst write-item port)
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(display ")" port))
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(define (write-derivation drv port)
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"Write the ATerm-like serialization of DRV to PORT. See Section 2.4 of
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Eelco Dolstra's PhD dissertation for an overview of a previous version of
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that form."
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;; Make sure we're using the faster implementation.
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(define format simple-format)
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(define (write-string-list lst)
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(write-list lst write port))
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(define (coalesce-duplicate-inputs inputs)
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;; Return a list of inputs, such that when INPUTS contains the same DRV
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;; twice, they are coalesced, with their sub-derivations merged. This is
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;; needed because Nix itself keeps only one of them.
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(fold (lambda (input result)
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(match input
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(($ <derivation-input> path sub-drvs)
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;; XXX: quadratic
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(match (find (match-lambda
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(($ <derivation-input> p s)
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(string=? p path)))
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result)
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(#f
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(cons input result))
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((and dup ($ <derivation-input> _ sub-drvs2))
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;; Merge DUP with INPUT.
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(let ((sub-drvs (delete-duplicates
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(append sub-drvs sub-drvs2))))
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(cons (make-derivation-input path sub-drvs)
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(delq dup result))))))))
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'()
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inputs))
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(define (write-output output port)
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(match output
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((name . ($ <derivation-output> path hash-algo hash recursive?))
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(write-tuple (list name path
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(if hash-algo
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(string-append (if recursive? "r:" "")
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(symbol->string hash-algo))
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"")
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(or (and=> hash bytevector->base16-string)
|
||
""))
|
||
write
|
||
port))))
|
||
|
||
(define (write-input input port)
|
||
(match input
|
||
(($ <derivation-input> path sub-drvs)
|
||
(display "(" port)
|
||
(write path port)
|
||
(display "," port)
|
||
(write-string-list (sort sub-drvs string<?))
|
||
(display ")" port))))
|
||
|
||
(define (write-env-var env-var port)
|
||
(match env-var
|
||
((name . value)
|
||
(display "(" port)
|
||
(write name port)
|
||
(display "," port)
|
||
(write value port)
|
||
(display ")" port))))
|
||
|
||
;; Note: lists are sorted alphabetically, to conform with the behavior of
|
||
;; C++ `std::map' in Nix itself.
|
||
|
||
(match drv
|
||
(($ <derivation> outputs inputs sources
|
||
system builder args env-vars)
|
||
(display "Derive(" port)
|
||
(write-list (sort outputs
|
||
(lambda (o1 o2)
|
||
(string<? (car o1) (car o2))))
|
||
write-output
|
||
port)
|
||
(display "," port)
|
||
(write-list (sort (coalesce-duplicate-inputs inputs)
|
||
(lambda (i1 i2)
|
||
(string<? (derivation-input-path i1)
|
||
(derivation-input-path i2))))
|
||
write-input
|
||
port)
|
||
(display "," port)
|
||
(write-string-list (sort sources string<?))
|
||
(format port ",~s,~s," system builder)
|
||
(write-string-list args)
|
||
(display "," port)
|
||
(write-list (sort env-vars
|
||
(lambda (e1 e2)
|
||
(string<? (car e1) (car e2))))
|
||
write-env-var
|
||
port)
|
||
(display ")" port))))
|
||
|
||
(define derivation->string
|
||
(memoize
|
||
(lambda (drv)
|
||
"Return the external representation of DRV as a string."
|
||
(with-fluids ((%default-port-encoding "UTF-8"))
|
||
(call-with-output-string
|
||
(cut write-derivation drv <>))))))
|
||
|
||
(define* (derivation->output-path drv #:optional (output "out"))
|
||
"Return the store path of its output OUTPUT. Raise a
|
||
'&derivation-missing-output-error' condition if OUTPUT is not an output of
|
||
DRV."
|
||
(let ((output* (assoc-ref (derivation-outputs drv) output)))
|
||
(if output*
|
||
(derivation-output-path output*)
|
||
(raise (condition (&derivation-missing-output-error
|
||
(derivation drv)
|
||
(output output)))))))
|
||
|
||
(define (derivation->output-paths drv)
|
||
"Return the list of name/path pairs of the outputs of DRV."
|
||
(map (match-lambda
|
||
((name . output)
|
||
(cons name (derivation-output-path output))))
|
||
(derivation-outputs drv)))
|
||
|
||
(define derivation-path->output-path
|
||
;; This procedure is called frequently, so memoize it.
|
||
(memoize
|
||
(lambda* (path #:optional (output "out"))
|
||
"Read the derivation from PATH (`/gnu/store/xxx.drv'), and return the store
|
||
path of its output OUTPUT."
|
||
(derivation->output-path (call-with-input-file path read-derivation)
|
||
output))))
|
||
|
||
(define (derivation-path->output-paths path)
|
||
"Read the derivation from PATH (`/gnu/store/xxx.drv'), and return the
|
||
list of name/path pairs of its outputs."
|
||
(derivation->output-paths (call-with-input-file path read-derivation)))
|
||
|
||
|
||
;;;
|
||
;;; Derivation primitive.
|
||
;;;
|
||
|
||
(define (compressed-hash bv size) ; `compressHash'
|
||
"Given the hash stored in BV, return a compressed version thereof that fits
|
||
in SIZE bytes."
|
||
(define new (make-bytevector size 0))
|
||
(define old-size (bytevector-length bv))
|
||
(let loop ((i 0))
|
||
(if (= i old-size)
|
||
new
|
||
(let* ((j (modulo i size))
|
||
(o (bytevector-u8-ref new j)))
|
||
(bytevector-u8-set! new j
|
||
(logxor o (bytevector-u8-ref bv i)))
|
||
(loop (+ 1 i))))))
|
||
|
||
(define derivation-path->base16-hash
|
||
(memoize
|
||
(lambda (file)
|
||
"Return a string containing the base16 representation of the hash of the
|
||
derivation at FILE."
|
||
(call-with-input-file file
|
||
(compose bytevector->base16-string
|
||
derivation-hash
|
||
read-derivation)))))
|
||
|
||
(define derivation-hash ; `hashDerivationModulo' in derivations.cc
|
||
(memoize
|
||
(lambda (drv)
|
||
"Return the hash of DRV, modulo its fixed-output inputs, as a bytevector."
|
||
(match drv
|
||
(($ <derivation> ((_ . ($ <derivation-output> path
|
||
(? symbol? hash-algo) (? bytevector? hash)
|
||
(? boolean? recursive?)))))
|
||
;; A fixed-output derivation.
|
||
(sha256
|
||
(string->utf8
|
||
(string-append "fixed:out:"
|
||
(if recursive? "r:" "")
|
||
(symbol->string hash-algo)
|
||
":" (bytevector->base16-string hash)
|
||
":" path))))
|
||
(($ <derivation> outputs inputs sources
|
||
system builder args env-vars)
|
||
;; A regular derivation: replace the path of each input with that
|
||
;; input's hash; return the hash of serialization of the resulting
|
||
;; derivation.
|
||
(let* ((inputs (map (match-lambda
|
||
(($ <derivation-input> path sub-drvs)
|
||
(let ((hash (derivation-path->base16-hash path)))
|
||
(make-derivation-input hash sub-drvs))))
|
||
inputs))
|
||
(drv (make-derivation outputs inputs sources
|
||
system builder args env-vars
|
||
#f)))
|
||
|
||
;; XXX: At this point this remains faster than `port-sha256', because
|
||
;; the SHA256 port's `write' method gets called for every single
|
||
;; character.
|
||
(sha256
|
||
(string->utf8 (derivation->string drv)))))))))
|
||
|
||
(define (store-path type hash name) ; makeStorePath
|
||
"Return the store path for NAME/HASH/TYPE."
|
||
(let* ((s (string-append type ":sha256:"
|
||
(bytevector->base16-string hash) ":"
|
||
(%store-prefix) ":" name))
|
||
(h (sha256 (string->utf8 s)))
|
||
(c (compressed-hash h 20)))
|
||
(string-append (%store-prefix) "/"
|
||
(bytevector->nix-base32-string c) "-"
|
||
name)))
|
||
|
||
(define (output-path output hash name) ; makeOutputPath
|
||
"Return an output path for OUTPUT (the name of the output as a string) of
|
||
the derivation called NAME with hash HASH."
|
||
(store-path (string-append "output:" output) hash
|
||
(if (string=? output "out")
|
||
name
|
||
(string-append name "-" output))))
|
||
|
||
(define (fixed-output-path output hash-algo hash recursive? name)
|
||
"Return an output path for the fixed output OUTPUT defined by HASH of type
|
||
HASH-ALGO, of the derivation NAME. RECURSIVE? has the same meaning as for
|
||
'add-to-store'."
|
||
(if (and recursive? (eq? hash-algo 'sha256))
|
||
(store-path "source" hash name)
|
||
(let ((tag (string-append "fixed:" output ":"
|
||
(if recursive? "r:" "")
|
||
(symbol->string hash-algo) ":"
|
||
(bytevector->base16-string hash) ":")))
|
||
(store-path (string-append "output:" output)
|
||
(sha256 (string->utf8 tag))
|
||
name))))
|
||
|
||
(define* (derivation store name builder args
|
||
#:key
|
||
(system (%current-system)) (env-vars '())
|
||
(inputs '()) (outputs '("out"))
|
||
hash hash-algo recursive?
|
||
references-graphs
|
||
allowed-references disallowed-references
|
||
leaked-env-vars local-build?
|
||
(substitutable? #t))
|
||
"Build a derivation with the given arguments, and return the resulting
|
||
<derivation> object. When HASH and HASH-ALGO are given, a
|
||
fixed-output derivation is created---i.e., one whose result is known in
|
||
advance, such as a file download. If, in addition, RECURSIVE? is true, then
|
||
that fixed output may be an executable file or a directory and HASH must be
|
||
the hash of an archive containing this output.
|
||
|
||
When REFERENCES-GRAPHS is true, it must be a list of file name/store path
|
||
pairs. In that case, the reference graph of each store path is exported in
|
||
the build environment in the corresponding file, in a simple text format.
|
||
|
||
When ALLOWED-REFERENCES is true, it must be a list of store items or outputs
|
||
that the derivation's outputs may refer to. Likewise, DISALLOWED-REFERENCES,
|
||
if true, must be a list of things the outputs may not refer to.
|
||
|
||
When LEAKED-ENV-VARS is true, it must be a list of strings denoting
|
||
environment variables that are allowed to \"leak\" from the daemon's
|
||
environment to the build environment. This is only applicable to fixed-output
|
||
derivations--i.e., when HASH is true. The main use is to allow variables such
|
||
as \"http_proxy\" to be passed to derivations that download files.
|
||
|
||
When LOCAL-BUILD? is true, declare that the derivation is not a good candidate
|
||
for offloading and should rather be built locally. This is the case for small
|
||
derivations where the costs of data transfers would outweigh the benefits.
|
||
|
||
When SUBSTITUTABLE? is false, declare that substitutes of the derivation's
|
||
output should not be used."
|
||
(define (add-output-paths drv)
|
||
;; Return DRV with an actual store path for each of its output and the
|
||
;; corresponding environment variable.
|
||
(match drv
|
||
(($ <derivation> outputs inputs sources
|
||
system builder args env-vars)
|
||
(let* ((drv-hash (derivation-hash drv))
|
||
(outputs (map (match-lambda
|
||
((output-name . ($ <derivation-output>
|
||
_ algo hash rec?))
|
||
(let ((path (if hash
|
||
(fixed-output-path output-name
|
||
algo hash
|
||
rec? name)
|
||
(output-path output-name
|
||
drv-hash name))))
|
||
(cons output-name
|
||
(make-derivation-output path algo
|
||
hash rec?)))))
|
||
outputs)))
|
||
(make-derivation outputs inputs sources system builder args
|
||
(map (match-lambda
|
||
((name . value)
|
||
(cons name
|
||
(or (and=> (assoc-ref outputs name)
|
||
derivation-output-path)
|
||
value))))
|
||
env-vars)
|
||
#f)))))
|
||
|
||
(define (user+system-env-vars)
|
||
;; Some options are passed to the build daemon via the env. vars of
|
||
;; derivations (urgh!). We hide that from our API, but here is the place
|
||
;; where we kludgify those options.
|
||
(let ((env-vars `(,@(if local-build?
|
||
`(("preferLocalBuild" . "1"))
|
||
'())
|
||
,@(if (not substitutable?)
|
||
`(("allowSubstitutes" . "0"))
|
||
'())
|
||
,@(if allowed-references
|
||
`(("allowedReferences"
|
||
. ,(string-join allowed-references)))
|
||
'())
|
||
,@(if disallowed-references
|
||
`(("disallowedReferences"
|
||
. ,(string-join disallowed-references)))
|
||
'())
|
||
,@(if leaked-env-vars
|
||
`(("impureEnvVars"
|
||
. ,(string-join leaked-env-vars)))
|
||
'())
|
||
,@env-vars)))
|
||
(match references-graphs
|
||
(((file . path) ...)
|
||
(let ((value (map (cut string-append <> " " <>)
|
||
file path)))
|
||
;; XXX: This all breaks down if an element of FILE or PATH contains
|
||
;; white space.
|
||
`(("exportReferencesGraph" . ,(string-join value " "))
|
||
,@env-vars)))
|
||
(#f
|
||
env-vars))))
|
||
|
||
(define (env-vars-with-empty-outputs env-vars)
|
||
;; Return a variant of ENV-VARS where each OUTPUTS is associated with an
|
||
;; empty string, even outputs that do not appear in ENV-VARS.
|
||
(let ((e (map (match-lambda
|
||
((name . val)
|
||
(if (member name outputs)
|
||
(cons name "")
|
||
(cons name val))))
|
||
env-vars)))
|
||
(fold (lambda (output-name env-vars)
|
||
(if (assoc output-name env-vars)
|
||
env-vars
|
||
(append env-vars `((,output-name . "")))))
|
||
e
|
||
outputs)))
|
||
|
||
(define (set-file-name drv file)
|
||
;; Set FILE as the 'file-name' field of DRV.
|
||
(match drv
|
||
(($ <derivation> outputs inputs sources system builder
|
||
args env-vars)
|
||
(make-derivation outputs inputs sources system builder
|
||
args env-vars file))))
|
||
|
||
(let* ((outputs (map (lambda (name)
|
||
;; Return outputs with an empty path.
|
||
(cons name
|
||
(make-derivation-output "" hash-algo
|
||
hash recursive?)))
|
||
outputs))
|
||
(inputs (map (match-lambda
|
||
(((? derivation? drv))
|
||
(make-derivation-input (derivation-file-name drv)
|
||
'("out")))
|
||
(((? derivation? drv) sub-drvs ...)
|
||
(make-derivation-input (derivation-file-name drv)
|
||
sub-drvs))
|
||
(((? direct-store-path? input))
|
||
(make-derivation-input input '("out")))
|
||
(((? direct-store-path? input) sub-drvs ...)
|
||
(make-derivation-input input sub-drvs))
|
||
((input . _)
|
||
(let ((path (add-to-store store
|
||
(basename input)
|
||
#t "sha256" input)))
|
||
(make-derivation-input path '()))))
|
||
(delete-duplicates inputs)))
|
||
(env-vars (env-vars-with-empty-outputs (user+system-env-vars)))
|
||
(drv-masked (make-derivation outputs
|
||
(filter (compose derivation-path?
|
||
derivation-input-path)
|
||
inputs)
|
||
(filter-map (lambda (i)
|
||
(let ((p (derivation-input-path i)))
|
||
(and (not (derivation-path? p))
|
||
p)))
|
||
inputs)
|
||
system builder args env-vars #f))
|
||
(drv (add-output-paths drv-masked)))
|
||
|
||
(let ((file (add-text-to-store store (string-append name ".drv")
|
||
(derivation->string drv)
|
||
(map derivation-input-path
|
||
inputs))))
|
||
(set-file-name drv file))))
|
||
|
||
(define* (map-derivation store drv mapping
|
||
#:key (system (%current-system)))
|
||
"Given MAPPING, a list of pairs of derivations, return a derivation based on
|
||
DRV where all the 'car's of MAPPING have been replaced by its 'cdr's,
|
||
recursively."
|
||
(define (substitute str initial replacements)
|
||
(fold (lambda (path replacement result)
|
||
(string-replace-substring result path
|
||
replacement))
|
||
str
|
||
initial replacements))
|
||
|
||
(define (substitute-file file initial replacements)
|
||
(define contents
|
||
(with-fluids ((%default-port-encoding #f))
|
||
(call-with-input-file file get-string-all)))
|
||
|
||
(let ((updated (substitute contents initial replacements)))
|
||
(if (string=? updated contents)
|
||
file
|
||
;; XXX: permissions aren't preserved.
|
||
(add-text-to-store store (store-path-package-name file)
|
||
updated))))
|
||
|
||
(define input->output-paths
|
||
(match-lambda
|
||
(((? derivation? drv))
|
||
(list (derivation->output-path drv)))
|
||
(((? derivation? drv) sub-drvs ...)
|
||
(map (cut derivation->output-path drv <>)
|
||
sub-drvs))
|
||
((file)
|
||
(list file))))
|
||
|
||
(let ((mapping (fold (lambda (pair result)
|
||
(match pair
|
||
(((? derivation? orig) . replacement)
|
||
(vhash-cons (derivation-file-name orig)
|
||
replacement result))
|
||
((file . replacement)
|
||
(vhash-cons file replacement result))))
|
||
vlist-null
|
||
mapping)))
|
||
(define rewritten-input
|
||
;; Rewrite the given input according to MAPPING, and return an input
|
||
;; in the format used in 'derivation' calls.
|
||
(memoize
|
||
(lambda (input loop)
|
||
(match input
|
||
(($ <derivation-input> path (sub-drvs ...))
|
||
(match (vhash-assoc path mapping)
|
||
((_ . (? derivation? replacement))
|
||
(cons replacement sub-drvs))
|
||
((_ . replacement)
|
||
(list replacement))
|
||
(#f
|
||
(let* ((drv (loop (call-with-input-file path read-derivation))))
|
||
(cons drv sub-drvs)))))))))
|
||
|
||
(let loop ((drv drv))
|
||
(let* ((inputs (map (cut rewritten-input <> loop)
|
||
(derivation-inputs drv)))
|
||
(initial (append-map derivation-input-output-paths
|
||
(derivation-inputs drv)))
|
||
(replacements (append-map input->output-paths inputs))
|
||
|
||
;; Sources typically refer to the output directories of the
|
||
;; original inputs, INITIAL. Rewrite them by substituting
|
||
;; REPLACEMENTS.
|
||
(sources (map (lambda (source)
|
||
(match (vhash-assoc source mapping)
|
||
((_ . replacement)
|
||
replacement)
|
||
(#f
|
||
(substitute-file source
|
||
initial replacements))))
|
||
(derivation-sources drv)))
|
||
|
||
;; Now augment the lists of initials and replacements.
|
||
(initial (append (derivation-sources drv) initial))
|
||
(replacements (append sources replacements))
|
||
(name (store-path-package-name
|
||
(string-drop-right (derivation-file-name drv)
|
||
4))))
|
||
(derivation store name
|
||
(substitute (derivation-builder drv)
|
||
initial replacements)
|
||
(map (cut substitute <> initial replacements)
|
||
(derivation-builder-arguments drv))
|
||
#:system system
|
||
#:env-vars (map (match-lambda
|
||
((var . value)
|
||
`(,var
|
||
. ,(substitute value initial
|
||
replacements))))
|
||
(derivation-builder-environment-vars drv))
|
||
#:inputs (append (map list sources) inputs)
|
||
#:outputs (derivation-output-names drv)
|
||
#:hash (match (derivation-outputs drv)
|
||
((($ <derivation-output> _ algo hash))
|
||
hash)
|
||
(_ #f))
|
||
#:hash-algo (match (derivation-outputs drv)
|
||
((($ <derivation-output> _ algo hash))
|
||
algo)
|
||
(_ #f)))))))
|
||
|
||
|
||
;;;
|
||
;;; Store compatibility layer.
|
||
;;;
|
||
|
||
(define* (build-derivations store derivations
|
||
#:optional (mode (build-mode normal)))
|
||
"Build DERIVATIONS, a list of <derivation> objects or .drv file names, using
|
||
the specified MODE."
|
||
(build-things store (map (match-lambda
|
||
((? string? file) file)
|
||
((and drv ($ <derivation>))
|
||
(derivation-file-name drv)))
|
||
derivations)
|
||
mode))
|
||
|
||
|
||
;;;
|
||
;;; Guile-based builders.
|
||
;;;
|
||
|
||
(define (parent-directories file-name)
|
||
"Return the list of parent dirs of FILE-NAME, in the order in which an
|
||
`mkdir -p' implementation would make them."
|
||
(let ((not-slash (char-set-complement (char-set #\/))))
|
||
(reverse
|
||
(fold (lambda (dir result)
|
||
(match result
|
||
(()
|
||
(list dir))
|
||
((prev _ ...)
|
||
(cons (string-append prev "/" dir)
|
||
result))))
|
||
'()
|
||
(remove (cut string=? <> ".")
|
||
(string-tokenize (dirname file-name) not-slash))))))
|
||
|
||
(define* (imported-files store files ;deprecated
|
||
#:key (name "file-import")
|
||
(system (%current-system))
|
||
(guile (%guile-for-build)))
|
||
"Return a derivation that imports FILES into STORE. FILES must be a list
|
||
of (FINAL-PATH . FILE-NAME) pairs; each FILE-NAME is read from the file
|
||
system, imported, and appears under FINAL-PATH in the resulting store path."
|
||
(let* ((files (map (match-lambda
|
||
((final-path . file-name)
|
||
(list final-path
|
||
(add-to-store store (basename final-path) #f
|
||
"sha256" file-name))))
|
||
files))
|
||
(builder
|
||
`(begin
|
||
(mkdir %output) (chdir %output)
|
||
,@(append-map (match-lambda
|
||
((final-path store-path)
|
||
(append (match (parent-directories final-path)
|
||
(() '())
|
||
((head ... tail)
|
||
(append (map (lambda (d)
|
||
`(false-if-exception
|
||
(mkdir ,d)))
|
||
head)
|
||
`((or (file-exists? ,tail)
|
||
(mkdir ,tail))))))
|
||
`((symlink ,store-path ,final-path)))))
|
||
files))))
|
||
(build-expression->derivation store name builder
|
||
#:system system
|
||
#:inputs files
|
||
#:guile-for-build guile
|
||
#:local-build? #t)))
|
||
|
||
;; The "file not found" error condition.
|
||
(define-condition-type &file-search-error &error
|
||
file-search-error?
|
||
(file file-search-error-file-name)
|
||
(path file-search-error-search-path))
|
||
|
||
(define search-path*
|
||
;; A memoizing version of 'search-path' so 'imported-modules' does not end
|
||
;; up looking for the same files over and over again.
|
||
(memoize (lambda (path file)
|
||
"Search for FILE in PATH and memoize the result. Raise a
|
||
'&file-search-error' condition if it could not be found."
|
||
(or (search-path path file)
|
||
(raise (condition
|
||
(&file-search-error (file file)
|
||
(path path))))))))
|
||
|
||
(define (module->source-file-name module)
|
||
"Return the file name corresponding to MODULE, a Guile module name (a list
|
||
of symbols.)"
|
||
(string-append (string-join (map symbol->string module) "/")
|
||
".scm"))
|
||
|
||
(define* (%imported-modules store modules ;deprecated
|
||
#:key (name "module-import")
|
||
(system (%current-system))
|
||
(guile (%guile-for-build))
|
||
(module-path %load-path))
|
||
"Return a derivation that contains the source files of MODULES, a list of
|
||
module names such as `(ice-9 q)'. All of MODULES must be in the MODULE-PATH
|
||
search path."
|
||
;; TODO: Determine the closure of MODULES, build the `.go' files,
|
||
;; canonicalize the source files through read/write, etc.
|
||
(let ((files (map (lambda (m)
|
||
(let ((f (module->source-file-name m)))
|
||
(cons f (search-path* module-path f))))
|
||
modules)))
|
||
(imported-files store files #:name name #:system system
|
||
#:guile guile)))
|
||
|
||
(define* (%compiled-modules store modules ;deprecated
|
||
#:key (name "module-import-compiled")
|
||
(system (%current-system))
|
||
(guile (%guile-for-build))
|
||
(module-path %load-path))
|
||
"Return a derivation that builds a tree containing the `.go' files
|
||
corresponding to MODULES. All the MODULES are built in a context where
|
||
they can refer to each other."
|
||
(let* ((module-drv (%imported-modules store modules
|
||
#:system system
|
||
#:guile guile
|
||
#:module-path module-path))
|
||
(module-dir (derivation->output-path module-drv))
|
||
(files (map (lambda (m)
|
||
(let ((f (string-join (map symbol->string m)
|
||
"/")))
|
||
(cons (string-append f ".go")
|
||
(string-append module-dir "/" f ".scm"))))
|
||
modules)))
|
||
(define builder
|
||
`(begin
|
||
(use-modules (system base compile))
|
||
(let ((out (assoc-ref %outputs "out")))
|
||
(mkdir out)
|
||
(chdir out))
|
||
|
||
(set! %load-path
|
||
(cons ,module-dir %load-path))
|
||
|
||
,@(map (match-lambda
|
||
((output . input)
|
||
(let ((make-parent-dirs (map (lambda (dir)
|
||
`(unless (file-exists? ,dir)
|
||
(mkdir ,dir)))
|
||
(parent-directories output))))
|
||
`(begin
|
||
,@make-parent-dirs
|
||
(compile-file ,input
|
||
#:output-file ,output
|
||
#:opts %auto-compilation-options)))))
|
||
files)))
|
||
|
||
(build-expression->derivation store name builder
|
||
#:inputs `(("modules" ,module-drv))
|
||
#:system system
|
||
#:guile-for-build guile
|
||
#:local-build? #t)))
|
||
|
||
(define* (build-expression->derivation store name exp ;deprecated
|
||
#:key
|
||
(system (%current-system))
|
||
(inputs '())
|
||
(outputs '("out"))
|
||
hash hash-algo recursive?
|
||
(env-vars '())
|
||
(modules '())
|
||
guile-for-build
|
||
references-graphs
|
||
allowed-references
|
||
disallowed-references
|
||
local-build? (substitutable? #t))
|
||
"Return a derivation that executes Scheme expression EXP as a builder
|
||
for derivation NAME. INPUTS must be a list of (NAME DRV-PATH SUB-DRV)
|
||
tuples; when SUB-DRV is omitted, \"out\" is assumed. MODULES is a list
|
||
of names of Guile modules from the current search path to be copied in
|
||
the store, compiled, and made available in the load path during the
|
||
execution of EXP.
|
||
|
||
EXP is evaluated in an environment where %OUTPUT is bound to the main
|
||
output path, %OUTPUTS is bound to a list of output/path pairs, and where
|
||
%BUILD-INPUTS is bound to an alist of string/output-path pairs made from
|
||
INPUTS. Optionally, ENV-VARS is a list of string pairs specifying the
|
||
name and value of environment variables visible to the builder. The
|
||
builder terminates by passing the result of EXP to `exit'; thus, when
|
||
EXP returns #f, the build is considered to have failed.
|
||
|
||
EXP is built using GUILE-FOR-BUILD (a derivation). When GUILE-FOR-BUILD is
|
||
omitted or is #f, the value of the `%guile-for-build' fluid is used instead.
|
||
|
||
See the `derivation' procedure for the meaning of REFERENCES-GRAPHS,
|
||
ALLOWED-REFERENCES, DISALLOWED-REFERENCES, LOCAL-BUILD?, and SUBSTITUTABLE?."
|
||
(define guile-drv
|
||
(or guile-for-build (%guile-for-build)))
|
||
|
||
(define guile
|
||
(string-append (derivation->output-path guile-drv)
|
||
"/bin/guile"))
|
||
|
||
(define module-form?
|
||
(match-lambda
|
||
(((or 'define-module 'use-modules) _ ...) #t)
|
||
(_ #f)))
|
||
|
||
(define source-path
|
||
;; When passed an input that is a source, return its path; otherwise
|
||
;; return #f.
|
||
(match-lambda
|
||
((_ (? derivation?) _ ...)
|
||
#f)
|
||
((_ path _ ...)
|
||
(and (not (derivation-path? path))
|
||
path))))
|
||
|
||
(let* ((prologue `(begin
|
||
,@(match exp
|
||
((_ ...)
|
||
;; Module forms must appear at the top-level so
|
||
;; that any macros they export can be expanded.
|
||
(filter module-form? exp))
|
||
(_ `(,exp)))
|
||
|
||
(define %output (getenv "out"))
|
||
(define %outputs
|
||
(map (lambda (o)
|
||
(cons o (getenv o)))
|
||
',outputs))
|
||
(define %build-inputs
|
||
',(map (match-lambda
|
||
((name drv . rest)
|
||
(let ((sub (match rest
|
||
(() "out")
|
||
((x) x))))
|
||
(cons name
|
||
(cond
|
||
((derivation? drv)
|
||
(derivation->output-path drv sub))
|
||
((derivation-path? drv)
|
||
(derivation-path->output-path drv
|
||
sub))
|
||
(else drv))))))
|
||
inputs))
|
||
|
||
,@(if (null? modules)
|
||
'()
|
||
;; Remove our own settings.
|
||
'((unsetenv "GUILE_LOAD_COMPILED_PATH")))
|
||
|
||
;; Guile sets it, but remove it to avoid conflicts when
|
||
;; building Guile-using packages.
|
||
(unsetenv "LD_LIBRARY_PATH")))
|
||
(builder (add-text-to-store store
|
||
(string-append name "-guile-builder")
|
||
|
||
;; Explicitly use UTF-8 for determinism,
|
||
;; and also because UTF-8 output is faster.
|
||
(with-fluids ((%default-port-encoding
|
||
"UTF-8"))
|
||
(call-with-output-string
|
||
(lambda (port)
|
||
(write prologue port)
|
||
(write
|
||
`(exit
|
||
,(match exp
|
||
((_ ...)
|
||
(remove module-form? exp))
|
||
(_ `(,exp))))
|
||
port))))
|
||
|
||
;; The references don't really matter
|
||
;; since the builder is always used in
|
||
;; conjunction with the drv that needs
|
||
;; it. For clarity, we add references
|
||
;; to the subset of INPUTS that are
|
||
;; sources, avoiding references to other
|
||
;; .drv; otherwise, BUILDER's hash would
|
||
;; depend on those, even if they are
|
||
;; fixed-output.
|
||
(filter-map source-path inputs)))
|
||
|
||
(mod-drv (and (pair? modules)
|
||
(%imported-modules store modules
|
||
#:guile guile-drv
|
||
#:system system)))
|
||
(mod-dir (and mod-drv
|
||
(derivation->output-path mod-drv)))
|
||
(go-drv (and (pair? modules)
|
||
(%compiled-modules store modules
|
||
#:guile guile-drv
|
||
#:system system)))
|
||
(go-dir (and go-drv
|
||
(derivation->output-path go-drv))))
|
||
(derivation store name guile
|
||
`("--no-auto-compile"
|
||
,@(if mod-dir `("-L" ,mod-dir) '())
|
||
,builder)
|
||
|
||
#:system system
|
||
|
||
#:inputs `((,(or guile-for-build (%guile-for-build)))
|
||
(,builder)
|
||
,@(map cdr inputs)
|
||
,@(if mod-drv `((,mod-drv) (,go-drv)) '()))
|
||
|
||
;; When MODULES is non-empty, shamelessly clobber
|
||
;; $GUILE_LOAD_COMPILED_PATH.
|
||
#:env-vars (if go-dir
|
||
`(("GUILE_LOAD_COMPILED_PATH" . ,go-dir)
|
||
,@(alist-delete "GUILE_LOAD_COMPILED_PATH"
|
||
env-vars))
|
||
env-vars)
|
||
|
||
#:hash hash #:hash-algo hash-algo
|
||
#:recursive? recursive?
|
||
#:outputs outputs
|
||
#:references-graphs references-graphs
|
||
#:allowed-references allowed-references
|
||
#:disallowed-references disallowed-references
|
||
#:local-build? local-build?
|
||
#:substitutable? substitutable?)))
|
||
|
||
|
||
;;;
|
||
;;; Monadic interface.
|
||
;;;
|
||
|
||
(define built-derivations
|
||
(store-lift build-derivations))
|