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-rw-r--r--build-aux/build-self.scm88
1 files changed, 72 insertions, 16 deletions
diff --git a/build-aux/build-self.scm b/build-aux/build-self.scm
index cc702490df..a1335fea1d 100644
--- a/build-aux/build-self.scm
+++ b/build-aux/build-self.scm
@@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2014, 2016 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2014, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -22,6 +22,7 @@
#:use-module (guix config)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-19)
+ #:use-module (ice-9 match)
#:export (build))
;;; Commentary:
@@ -58,11 +59,43 @@
(define xz
(first (find-best-packages-by-name "xz" #f)))
+(define (false-if-wrong-guile package)
+ "Return #f if PACKAGE depends on the \"wrong\" major version of Guile (e.g.,
+2.0 instead of 2.2), otherwise return PACKAGE."
+ (let ((guile (any (match-lambda
+ ((label (? package? dep) _ ...)
+ (and (string=? (package-name dep) "guile")
+ dep)))
+ (package-direct-inputs package))))
+ (and (or (not guile)
+ (string-prefix? (effective-version)
+ (package-version guile)))
+ package)))
+
+(define (package-for-current-guile . names)
+ "Return the package with one of the given NAMES that depends on the current
+Guile major version (2.0 or 2.2), or #f if none of the packages matches."
+ (let loop ((names names))
+ (match names
+ (()
+ #f)
+ ((name rest ...)
+ (match (find-best-packages-by-name name #f)
+ (()
+ (loop rest))
+ ((first _ ...)
+ (or (false-if-wrong-guile first)
+ (loop rest))))))))
+
(define guile-json
- (first (find-best-packages-by-name "guile-json" #f)))
+ (package-for-current-guile "guile-json"
+ "guile2.2-json"
+ "guile2.0-json"))
(define guile-ssh
- (first (find-best-packages-by-name "guile-ssh" #f)))
+ (package-for-current-guile "guile-ssh"
+ "guile2.2-ssh"
+ "guile2.0-ssh"))
;; The actual build procedure.
@@ -80,6 +113,17 @@ person's version identifier."
;; XXX: Replace with a Git commit id.
(date->string (current-date 0) "~Y~m~d.~H"))
+(define (guile-for-build)
+ "Return a derivation for Guile 2.0 or 2.2, whichever matches the currently
+running Guile."
+ (package->derivation (cond-expand
+ (guile-2.2
+ (canonical-package
+ (specification->package "guile@2.2")))
+ (else
+ (canonical-package
+ (specification->package "guile@2.0"))))))
+
;; The procedure below is our return value.
(define* (build source
#:key verbose? (version (date-version-string))
@@ -104,15 +148,19 @@ files."
#~(begin
(use-modules (guix build pull))
- (let ((json (string-append #$guile-json "/share/guile/site/2.0")))
+ (let ((json (string-append #$guile-json "/share/guile/site/"
+ #$(effective-version))))
(set! %load-path
- (cons* json
- (string-append #$guile-ssh "/share/guile/site/2.0")
- %load-path))
+ (cons* json
+ (string-append #$guile-ssh "/share/guile/site/"
+ #$(effective-version))
+ %load-path))
(set! %load-compiled-path
- (cons* json
- (string-append #$guile-ssh "/lib/guile/2.0/site-ccache")
- %load-compiled-path)))
+ (cons* json
+ (string-append #$guile-ssh "/lib/guile/"
+ #$(effective-version)
+ "/site-ccache")
+ %load-compiled-path)))
;; XXX: The 'guile-ssh' package prior to Guix commit 92b7258 was
;; broken: libguile-ssh could not be found. Work around that.
@@ -146,13 +194,21 @@ files."
(current-error-port)
(%make-void-port "w")))))
- (gexp->derivation "guix-latest" builder
- #:modules '((guix build pull)
- (guix build utils))
+ (mlet %store-monad ((guile (guile-for-build)))
+ (gexp->derivation "guix-latest" builder
+ #:modules '((guix build pull)
+ (guix build utils)
+
+ ;; Closure of (guix modules).
+ (guix modules)
+ (guix memoization)
+ (guix sets))
+
+ ;; Arrange so that our own (guix build …) modules are
+ ;; used.
+ #:module-path (list (top-source-directory))
- ;; Arrange so that our own (guix build …) modules are
- ;; used.
- #:module-path (list (top-source-directory))))
+ #:guile-for-build guile)))
;; This file is loaded by 'guix pull'; return it the build procedure.
build