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gnu: linux-initrd: Allow Guile modules to be embedded in the initrd. 

* gnu/packages/linux-initrd.scm (raw-build-system): New macro.
  (module-package, compiled-module-package): New procedures.
  (expression->initrd): Add `modules' keyword parameter.
  Add "modules" and "modules/compiled" inputs; copy them onto the
  initrd.
* guix/derivations.scm (imported-modules, compiled-modules): Publicize.
master
Ludovic Courtès 2013-08-28 23:59:14 +02:00
parent f02b5474f1
commit f989fa392f
2 changed files with 86 additions and 20 deletions
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104
gnu/packages/linux-initrd.scm
View File

@ -19,10 +19,14 @@
(define-module (gnu packages linux-initrd)
#:use-module (guix utils)
#:use-module (guix licenses)
#:use-module (guix build-system)
#:use-module ((guix derivations)
#:select (imported-modules compiled-modules %guile-for-build))
#:use-module (gnu packages)
#:use-module (gnu packages cpio)
#:use-module (gnu packages compression)
#:use-module (gnu packages linux)
#:use-module (gnu packages guile)
#:use-module ((gnu packages make-bootstrap)
#:select (%guile-static-stripped))
#:use-module (guix packages)
@ -38,6 +42,49 @@
;;; Code:
(define-syntax-rule (raw-build-system (store system name inputs) body ...)
"Lift BODY to a package build system."
;; TODO: Generalize.
(build-system
(name "raw")
(description "Raw build system")
(build (lambda* (store name source inputs #:key system #:allow-other-keys)
(parameterize ((%guile-for-build (package-derivation store
guile-2.0)))
body ...)))))
(define (module-package modules)
"Return a package that contains all of MODULES, a list of Guile module
names."
(package
(name "guile-modules")
(version "0")
(source #f)
(build-system (raw-build-system (store system name inputs)
(imported-modules store modules
#:name name
#:system system)))
(synopsis "Set of Guile modules")
(description synopsis)
(license gpl3+)
(home-page "http://www.gnu.org/software/guix/")))
(define (compiled-module-package modules)
"Return a package that contains the .go files corresponding to MODULES, a
list of Guile module names."
(package
(name "guile-compiled-modules")
(version "0")
(source #f)
(build-system (raw-build-system (store system name inputs)
(compiled-modules store modules
#:name name
#:system system)))
(synopsis "Set of compiled Guile modules")
(description synopsis)
(license gpl3+)
(home-page "http://www.gnu.org/software/guix/")))
(define* (expression->initrd exp
#:key
(guile %guile-static-stripped)
@ -45,12 +92,13 @@
(gzip gzip)
(name "guile-initrd")
(system (%current-system))
(modules '())
(linux #f)
(linux-modules '()))
"Return a package that contains a Linux initrd (a gzipped cpio archive)
containing GUILE and that evaluates EXP upon booting. LINUX-MODULES is a list
of `.ko' file names to be copied from LINUX into the initrd."
;; TODO: Add a `modules' parameter.
of `.ko' file names to be copied from LINUX into the initrd. MODULES is a
list of Guile module names to be embedded in the initrd."
;; General Linux overview in `Documentation/early-userspace/README' and
;; `Documentation/filesystems/ramfs-rootfs-initramfs.txt'.
@ -67,12 +115,22 @@ of `.ko' file names to be copied from LINUX into the initrd."
(rnrs bytevectors)
((system foreign) #:select (sizeof)))
(let ((guile (assoc-ref %build-inputs "guile"))
(cpio (string-append (assoc-ref %build-inputs "cpio")
"/bin/cpio"))
(gzip (string-append (assoc-ref %build-inputs "gzip")
"/bin/gzip"))
(out (assoc-ref %outputs "out")))
(let ((guile (assoc-ref %build-inputs "guile"))
(cpio (string-append (assoc-ref %build-inputs "cpio")
"/bin/cpio"))
(gzip (string-append (assoc-ref %build-inputs "gzip")
"/bin/gzip"))
(modules (assoc-ref %build-inputs "modules"))
(gos (assoc-ref %build-inputs "modules/compiled"))
(scm-dir (string-append "share/guile/" (effective-version)))
(go-dir (format #f ".cache/guile/ccache/~a-~a-~a-~a"
(effective-version)
(if (eq? (native-endianness) (endianness little))
"LE"
"BE")
(sizeof '*)
(effective-version)))
(out (assoc-ref %outputs "out")))
(mkdir out)
(mkdir "contents")
(with-directory-excursion "contents"
@ -84,19 +142,23 @@ of `.ko' file names to be copied from LINUX into the initrd."
(chmod "init" #o555)
(chmod "bin/guile" #o555)
;; Compile `init'.
(let ((go-dir (format #f ".cache/guile/ccache/~a-~a-~a-~a"
(effective-version)
(if (eq? (native-endianness) (endianness little))
"LE"
"BE")
(sizeof '*)
(effective-version))))
(mkdir-p go-dir)
(compile-file "init"
#:opts %auto-compilation-options
#:output-file (string-append go-dir "/init.go")))
;; Copy Guile modules.
(chmod scm-dir #o777)
(copy-recursively modules scm-dir
#:follow-symlinks? #t)
(copy-recursively gos (string-append "lib/guile/"
(effective-version) "/ccache")
#:follow-symlinks? #t)
;; Compile `init'.
(mkdir-p go-dir)
(set! %load-path (cons modules %load-path))
(set! %load-compiled-path (cons gos %load-compiled-path))
(compile-file "init"
#:opts %auto-compilation-options
#:output-file (string-append go-dir "/init.go"))
;; Copy Linux modules.
(let* ((linux (assoc-ref %build-inputs "linux"))
(module-dir (and linux
(string-append linux "/lib/modules"))))
@ -161,6 +223,8 @@ of `.ko' file names to be copied from LINUX into the initrd."
(inputs `(("guile" ,guile)
("cpio" ,cpio)
("gzip" ,gzip)
("modules" ,(module-package modules))
("modules/compiled" ,(compiled-module-package modules))
,@(if linux
`(("linux" ,linux))
'())))

2
guix/derivations.scm
View File

@ -61,6 +61,8 @@
derivation
%guile-for-build
imported-modules
compiled-modules
build-expression->derivation
imported-files))