350 lines
14 KiB
Scheme
350 lines
14 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2012, 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
|
||
;;; Copyright © 2013 Mark H Weaver <mhw@netris.org>
|
||
;;; Copyright © 2014 Eric Bavier <bavier@member.fsf.org>
|
||
;;; Copyright © 2016 Alex Kost <alezost@gmail.com>
|
||
;;; Copyright © 2016 Mathieu Lirzin <mthl@gnu.org>
|
||
;;;
|
||
;;; This file is part of GNU Guix.
|
||
;;;
|
||
;;; GNU Guix is free software; you can redistribute it and/or modify it
|
||
;;; under the terms of the GNU General Public License as published by
|
||
;;; the Free Software Foundation; either version 3 of the License, or (at
|
||
;;; your option) any later version.
|
||
;;;
|
||
;;; GNU Guix is distributed in the hope that it will be useful, but
|
||
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
;;; GNU General Public License for more details.
|
||
;;;
|
||
;;; You should have received a copy of the GNU General Public License
|
||
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
|
||
|
||
(define-module (gnu packages)
|
||
#:use-module (guix packages)
|
||
#:use-module (guix ui)
|
||
#:use-module (guix utils)
|
||
#:use-module (guix combinators)
|
||
#:use-module ((guix build utils)
|
||
#:select ((package-name->name+version
|
||
. hyphen-separated-name->name+version)))
|
||
#:use-module (ice-9 ftw)
|
||
#:use-module (ice-9 vlist)
|
||
#:use-module (ice-9 match)
|
||
#:use-module (srfi srfi-1)
|
||
#:use-module (srfi srfi-11)
|
||
#:use-module (srfi srfi-26)
|
||
#:use-module (srfi srfi-34)
|
||
#:use-module (srfi srfi-35)
|
||
#:use-module (srfi srfi-39)
|
||
#:export (search-patch
|
||
search-patches
|
||
search-bootstrap-binary
|
||
%patch-path
|
||
%bootstrap-binaries-path
|
||
%package-module-path
|
||
|
||
fold-packages
|
||
|
||
find-packages-by-name
|
||
find-best-packages-by-name
|
||
find-newest-available-packages
|
||
|
||
specification->package
|
||
specification->package+output))
|
||
|
||
;;; Commentary:
|
||
;;;
|
||
;;; General utilities for the software distribution---i.e., the modules under
|
||
;;; (gnu packages ...).
|
||
;;;
|
||
;;; Code:
|
||
|
||
;; By default, we store patches and bootstrap binaries alongside Guile
|
||
;; modules. This is so that these extra files can be found without
|
||
;; requiring a special setup, such as a specific installation directory
|
||
;; and an extra environment variable. One advantage of this setup is
|
||
;; that everything just works in an auto-compilation setting.
|
||
|
||
(define %bootstrap-binaries-path
|
||
(make-parameter
|
||
(map (cut string-append <> "/gnu/packages/bootstrap")
|
||
%load-path)))
|
||
|
||
(define (search-patch file-name)
|
||
"Search the patch FILE-NAME. Raise an error if not found."
|
||
(or (search-path (%patch-path) file-name)
|
||
(raise (condition
|
||
(&message (message (format #f (_ "~a: patch not found")
|
||
file-name)))))))
|
||
|
||
(define-syntax-rule (search-patches file-name ...)
|
||
"Return the list of absolute file names corresponding to each
|
||
FILE-NAME found in %PATCH-PATH."
|
||
(list (search-patch file-name) ...))
|
||
|
||
(define (search-bootstrap-binary file-name system)
|
||
"Search the bootstrap binary FILE-NAME for SYSTEM. Raise an error if not
|
||
found."
|
||
(or (search-path (%bootstrap-binaries-path)
|
||
(string-append system "/" file-name))
|
||
(raise (condition
|
||
(&message
|
||
(message
|
||
(format #f (_ "could not find bootstrap binary '~a' \
|
||
for system '~a'")
|
||
file-name system)))))))
|
||
|
||
(define %distro-root-directory
|
||
;; Absolute file name of the module hierarchy.
|
||
(dirname (search-path %load-path "guix.scm")))
|
||
|
||
(define %package-module-path
|
||
;; Search path for package modules. Each item must be either a directory
|
||
;; name or a pair whose car is a directory and whose cdr is a sub-directory
|
||
;; to narrow the search.
|
||
(let* ((not-colon (char-set-complement (char-set #\:)))
|
||
(environment (string-tokenize (or (getenv "GUIX_PACKAGE_PATH") "")
|
||
not-colon)))
|
||
;; Automatically add items from $GUIX_PACKAGE_PATH to Guile's search path.
|
||
(for-each (lambda (directory)
|
||
(set! %load-path (cons directory %load-path))
|
||
(set! %load-compiled-path
|
||
(cons directory %load-compiled-path)))
|
||
environment)
|
||
|
||
(make-parameter
|
||
(append environment `((,%distro-root-directory . "gnu/packages"))))))
|
||
|
||
(define %patch-path
|
||
;; Define it after '%package-module-path' so that '%load-path' contains user
|
||
;; directories, allowing patches in $GUIX_PACKAGE_PATH to be found.
|
||
(make-parameter
|
||
(map (lambda (directory)
|
||
(if (string=? directory %distro-root-directory)
|
||
(string-append directory "/gnu/packages/patches")
|
||
directory))
|
||
%load-path)))
|
||
|
||
(define* (scheme-files directory)
|
||
"Return the list of Scheme files found under DIRECTORY, recursively. The
|
||
returned list is sorted in alphabetical order."
|
||
|
||
;; Sort entries so that 'fold-packages' works in a deterministic fashion
|
||
;; regardless of details of the underlying file system.
|
||
(sort (file-system-fold (const #t) ; enter?
|
||
(lambda (path stat result) ; leaf
|
||
(if (string-suffix? ".scm" path)
|
||
(cons path result)
|
||
result))
|
||
(lambda (path stat result) ; down
|
||
result)
|
||
(lambda (path stat result) ; up
|
||
result)
|
||
(const #f) ; skip
|
||
(lambda (path stat errno result)
|
||
(warning (_ "cannot access `~a': ~a~%")
|
||
path (strerror errno))
|
||
result)
|
||
'()
|
||
directory
|
||
stat)
|
||
string<?))
|
||
|
||
(define file-name->module-name
|
||
(let ((not-slash (char-set-complement (char-set #\/))))
|
||
(lambda (file)
|
||
"Return the module name (a list of symbols) corresponding to FILE."
|
||
(map string->symbol
|
||
(string-tokenize (string-drop-right file 4) not-slash)))))
|
||
|
||
(define* (package-modules directory #:optional sub-directory)
|
||
"Return the list of modules that provide packages for the distribution.
|
||
Optionally, narrow the search to SUB-DIRECTORY."
|
||
(define prefix-len
|
||
(string-length directory))
|
||
|
||
(filter-map (lambda (file)
|
||
(let* ((file (substring file prefix-len))
|
||
(module (file-name->module-name file)))
|
||
(catch #t
|
||
(lambda ()
|
||
(resolve-interface module))
|
||
(lambda args
|
||
;; Report the error, but keep going.
|
||
(warn-about-load-error module args)
|
||
#f))))
|
||
(scheme-files (if sub-directory
|
||
(string-append directory "/" sub-directory)
|
||
directory))))
|
||
|
||
(define* (all-package-modules #:optional (path (%package-module-path)))
|
||
"Return the list of package modules found in PATH, a list of directories to
|
||
search."
|
||
(fold-right (lambda (spec result)
|
||
(match spec
|
||
((? string? directory)
|
||
(append (package-modules directory) result))
|
||
((directory . sub-directory)
|
||
(append (package-modules directory sub-directory)
|
||
result))))
|
||
'()
|
||
path))
|
||
|
||
(define (fold-packages proc init)
|
||
"Call (PROC PACKAGE RESULT) for each available package, using INIT as
|
||
the initial value of RESULT. It is guaranteed to never traverse the
|
||
same package twice."
|
||
(identity ; discard second return value
|
||
(fold2 (lambda (module result seen)
|
||
(fold2 (lambda (var result seen)
|
||
(if (and (package? var)
|
||
(not (vhash-assq var seen)))
|
||
(values (proc var result)
|
||
(vhash-consq var #t seen))
|
||
(values result seen)))
|
||
result
|
||
seen
|
||
(module-map (lambda (sym var)
|
||
(false-if-exception (variable-ref var)))
|
||
module)))
|
||
init
|
||
vlist-null
|
||
(all-package-modules))))
|
||
|
||
(define find-packages-by-name
|
||
(let ((packages (delay
|
||
(fold-packages (lambda (p r)
|
||
(vhash-cons (package-name p) p r))
|
||
vlist-null)))
|
||
(version>? (lambda (p1 p2)
|
||
(version>? (package-version p1) (package-version p2)))))
|
||
(lambda* (name #:optional version)
|
||
"Return the list of packages with the given NAME. If VERSION is not #f,
|
||
then only return packages whose version is prefixed by VERSION, sorted in
|
||
decreasing version order."
|
||
(let ((matching (sort (vhash-fold* cons '() name (force packages))
|
||
version>?)))
|
||
(if version
|
||
(filter (lambda (package)
|
||
(string-prefix? version (package-version package)))
|
||
matching)
|
||
matching)))))
|
||
|
||
(define find-newest-available-packages
|
||
(memoize
|
||
(lambda ()
|
||
"Return a vhash keyed by package names, and with
|
||
associated values of the form
|
||
|
||
(newest-version newest-package ...)
|
||
|
||
where the preferred package is listed first."
|
||
|
||
;; FIXME: Currently, the preferred package is whichever one
|
||
;; was found last by 'fold-packages'. Find a better solution.
|
||
(fold-packages (lambda (p r)
|
||
(let ((name (package-name p))
|
||
(version (package-version p)))
|
||
(match (vhash-assoc name r)
|
||
((_ newest-so-far . pkgs)
|
||
(case (version-compare version newest-so-far)
|
||
((>) (vhash-cons name `(,version ,p) r))
|
||
((=) (vhash-cons name `(,version ,p ,@pkgs) r))
|
||
((<) r)))
|
||
(#f (vhash-cons name `(,version ,p) r)))))
|
||
vlist-null))))
|
||
|
||
(define (find-best-packages-by-name name version)
|
||
"If version is #f, return the list of packages named NAME with the highest
|
||
version numbers; otherwise, return the list of packages named NAME and at
|
||
VERSION."
|
||
(if version
|
||
(find-packages-by-name name version)
|
||
(match (vhash-assoc name (find-newest-available-packages))
|
||
((_ version pkgs ...) pkgs)
|
||
(#f '()))))
|
||
|
||
|
||
(define %sigint-prompt
|
||
;; The prompt to jump to upon SIGINT.
|
||
(make-prompt-tag "interruptible"))
|
||
|
||
(define (call-with-sigint-handler thunk handler)
|
||
"Call THUNK and return its value. Upon SIGINT, call HANDLER with the signal
|
||
number in the context of the continuation of the call to this function, and
|
||
return its return value."
|
||
(call-with-prompt %sigint-prompt
|
||
(lambda ()
|
||
(sigaction SIGINT
|
||
(lambda (signum)
|
||
(sigaction SIGINT SIG_DFL)
|
||
(abort-to-prompt %sigint-prompt signum)))
|
||
(dynamic-wind
|
||
(const #t)
|
||
thunk
|
||
(cut sigaction SIGINT SIG_DFL)))
|
||
(lambda (k signum)
|
||
(handler signum))))
|
||
|
||
|
||
;;;
|
||
;;; Package specification.
|
||
;;;
|
||
|
||
(define* (%find-package spec name version #:key fallback?)
|
||
(match (find-best-packages-by-name name version)
|
||
((pkg . pkg*)
|
||
(unless (null? pkg*)
|
||
(warning (_ "ambiguous package specification `~a'~%") spec)
|
||
(warning (_ "choosing ~a from ~a~%")
|
||
(package-full-name pkg)
|
||
(location->string (package-location pkg))))
|
||
(when fallback?
|
||
(warning (_ "deprecated NAME-VERSION syntax; \
|
||
use NAME@VERSION instead~%")))
|
||
pkg)
|
||
(_
|
||
(if version
|
||
(leave (_ "~A: package not found for version ~a~%") name version)
|
||
(if (not fallback?)
|
||
;; XXX: Fallback to the older specification style with an hyphen
|
||
;; between NAME and VERSION, for backward compatibility.
|
||
(call-with-values
|
||
(lambda ()
|
||
(hyphen-separated-name->name+version name))
|
||
(cut %find-package spec <> <> #:fallback? #t))
|
||
|
||
;; The fallback case didn't find anything either, so bail out.
|
||
(leave (_ "~A: unknown package~%") name))))))
|
||
|
||
(define (specification->package spec)
|
||
"Return a package matching SPEC. SPEC may be a package name, or a package
|
||
name followed by an at-sign and a version number. If the version number is not
|
||
present, return the preferred newest version."
|
||
(let-values (((name version) (package-name->name+version spec)))
|
||
(%find-package spec name version)))
|
||
|
||
(define* (specification->package+output spec #:optional (output "out"))
|
||
"Return the package and output specified by SPEC, or #f and #f; SPEC may
|
||
optionally contain a version number and an output name, as in these examples:
|
||
|
||
guile
|
||
guile@2.0.9
|
||
guile:debug
|
||
guile@2.0.9:debug
|
||
|
||
If SPEC does not specify a version number, return the preferred newest
|
||
version; if SPEC does not specify an output, return OUTPUT."
|
||
(let-values (((name version sub-drv)
|
||
(package-specification->name+version+output spec output)))
|
||
(match (%find-package spec name version)
|
||
(#f
|
||
(values #f #f))
|
||
(package
|
||
(if (member sub-drv (package-outputs package))
|
||
(values package sub-drv)
|
||
(leave (_ "package `~a' lacks output `~a'~%")
|
||
(package-full-name package)
|
||
sub-drv))))))
|