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Add a `%current-system' fluid.

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* guix/utils.scm (gnu-triplet->nix-system): New procedure.
  (%current-system): New variable.

* tests/utils.scm ("gnu-triplet->nix-system"): New test.

* tests/derivations.scm (%current-system): Remove.  Update users to
  use (%current-system) instead.
This commit is contained in:
Ludovic Courtès 2012-06-11 21:50:17 +02:00
parent b37eb5ede6
commit 9809055707
3 changed files with 52 additions and 14 deletions
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31
guix/utils.scm
View file

@ -26,6 +26,7 @@ (define-module (guix utils)
#:use-module (ice-9 format)
#:autoload (ice-9 popen) (open-pipe*)
#:autoload (ice-9 rdelim) (read-line)
#:use-module (ice-9 regex)
#:use-module ((chop hash)
#:select (bytevector-hash
hash-method/sha256))
@ -41,7 +42,9 @@ (define-module (guix utils)
%nixpkgs-directory
nixpkgs-derivation
memoize))
memoize
gnu-triplet->nix-system
%current-system))
;;;
@ -400,3 +403,29 @@ (define (memoize proc)
list)))
(hash-set! cache args results)
(apply values results)))))))
(define (gnu-triplet->nix-system triplet)
"Return the Nix system type corresponding to TRIPLET, a GNU triplet as
returned by `config.guess'."
(let ((triplet (cond ((string-match "^i[345]86-(.*)$" triplet)
=>
(lambda (m)
(string-append "i686-" (match:substring m 1))))
(else triplet))))
(cond ((string-match "^([^-]+)-([^-]+-)?linux-gnu.*" triplet)
=>
(lambda (m)
;; Nix omits `-gnu' for GNU/Linux.
(string-append (match:substring m 1) "-linux")))
((string-match "^([^-]+)-([^-]+-)?([[:alpha:]]+)([0-9]+\\.?)*$" triplet)
=>
(lambda (m)
;; Nix strip the version number from names such as `gnu0.3',
;; `darwin10.2.0', etc., and always strips the vendor part.
(string-append (match:substring m 1) "-"
(match:substring m 3))))
(else triplet))))
(define %current-system
;; System type as expected by Nix, usually ARCHITECTURE-KERNEL.
(make-parameter (gnu-triplet->nix-system %host-type)))

22
tests/derivations.scm
View file

@ -30,10 +30,6 @@ (define-module (test-derivations)
#:use-module (ice-9 rdelim)
#:use-module (ice-9 ftw))
(define %current-system
;; System type as expected by Nix, usually ARCHITECTURE-KERNEL.
"x86_64-linux")
(define %store
(false-if-exception (open-connection)))
@ -79,7 +75,7 @@ (define prefix-len (string-length dir))
(let ((builder (add-text-to-store %store "my-builder.sh"
"#!/bin/sh\necho hello, world\n"
'())))
(store-path? (derivation %store "foo" %current-system builder
(store-path? (derivation %store "foo" (%current-system) builder
'() '(("HOME" . "/homeless")) '()))))
(test-assert "build derivation with 1 source"
@ -88,7 +84,7 @@ (define prefix-len (string-length dir))
"echo hello, world > \"$out\"\n"
'()))
((drv-path drv)
(derivation %store "foo" %current-system
(derivation %store "foo" (%current-system)
"/bin/sh" `(,builder)
'(("HOME" . "/homeless")
("zzz" . "Z!")
@ -106,7 +102,7 @@ (define prefix-len (string-length dir))
(let* ((builder (add-text-to-store %store "my-fixed-builder.sh"
"echo -n hello > $out" '()))
(hash (sha256 (string->utf8 "hello")))
(drv-path (derivation %store "fixed" %current-system
(drv-path (derivation %store "fixed" (%current-system)
"/bin/sh" `(,builder)
'() `((,builder))
#:hash hash #:hash-algo 'sha256))
@ -120,7 +116,7 @@ (define prefix-len (string-length dir))
(let* ((builder (add-text-to-store %store "my-fixed-builder.sh"
"echo one > $out ; echo two > $second"
'()))
(drv-path (derivation %store "fixed" %current-system
(drv-path (derivation %store "fixed" (%current-system)
"/bin/sh" `(,builder)
'(("HOME" . "/homeless")
("zzz" . "Z!")
@ -146,7 +142,7 @@ (define %coreutils
"echo $PATH ; mkdir --version ; mkdir $out ; touch $out/good"
'()))
(drv-path
(derivation %store "foo" %current-system
(derivation %store "foo" (%current-system)
"/bin/sh" `(,builder)
`(("PATH" .
,(string-append
@ -168,7 +164,7 @@ (define %coreutils
(call-with-output-file (string-append %output "/test")
(lambda (p)
(display '(hello guix) p)))))
(drv-path (build-expression->derivation %store "goo" %current-system
(drv-path (build-expression->derivation %store "goo" (%current-system)
builder '()))
(succeeded? (build-derivations %store (list drv-path))))
(and succeeded?
@ -185,7 +181,7 @@ (define %coreutils
(lambda (p)
(display '(world) p)))))
(drv-path (build-expression->derivation %store "double"
%current-system
(%current-system)
builder '()
#:outputs '("out"
"second")))
@ -204,7 +200,7 @@ (define %coreutils
(dup2 (port->fdes p) 1)
(execl (string-append cu "/bin/uname")
"uname" "-a")))))
(drv-path (build-expression->derivation %store "uname" %current-system
(drv-path (build-expression->derivation %store "uname" (%current-system)
builder
`(("cu" . ,%coreutils))))
(succeeded? (build-derivations %store (list drv-path))))
@ -227,7 +223,7 @@ (define %coreutils
(lambda (p)
(put-bytevector p bv))))))
(drv-path (build-expression->derivation
%store "hello-2.8.tar.gz" %current-system builder '()
%store "hello-2.8.tar.gz" (%current-system) builder '()
#:hash (nix-base32-string->bytevector
"0wqd8sjmxfskrflaxywc7gqw7sfawrfvdxd9skxawzfgyy0pzdz6")
#:hash-algo 'sha256))

13
tests/utils.scm
View file

@ -20,6 +20,7 @@
(define-module (test-utils)
#:use-module (guix utils)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-64)
#:use-module (rnrs bytevectors)
@ -85,6 +86,18 @@ (define-module (test-utils)
(close-pipe p)
l))))
(test-assert "gnu-triplet->nix-system"
(let ((samples '(("i586-gnu0.3" "i686-gnu")
("x86_64-unknown-linux-gnu" "x86_64-linux")
("i386-pc-linux-gnu" "i686-linux")
("x86_64-unknown-freebsd8.2" "x86_64-freebsd")
("x86_64-apple-darwin10.8.0" "x86_64-darwin")
("i686-pc-cygwin" "i686-cygwin"))))
(let-values (((gnu nix) (unzip2 samples)))
(every (lambda (gnu nix)
(equal? nix (gnu-triplet->nix-system gnu)))
gnu nix))))
(test-end)