gexp: Default to current target.

* guix/gexp.scm (lower-object): Set target argument to 'current by default and
look for the current target system at bind time if needed,
(gexp->file): ditto,
(gexp->script): ditto,
(lower-gexp): make sure lowered extensions are not cross-compiled.

* tests/gexp.scm: Add cross-compilation test-cases for gexp->script and
gexp->file with a target passed explicitely and with a default target.
This commit is contained in:
Mathieu Othacehe 2020-03-06 10:06:54 +01:00
parent fdae0fa50a
commit a6bf7a9745
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2 changed files with 103 additions and 38 deletions

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@ -2,7 +2,7 @@
;;; Copyright © 2014, 2015, 2016, 2017, 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2018 Clément Lassieur <clement@lassieur.org>
;;; Copyright © 2018 Jan Nieuwenhuizen <janneke@gnu.org>
;;; Copyright © 2019 Mathieu Othacehe <m.othacehe@gmail.com>
;;; Copyright © 2019, 2020 Mathieu Othacehe <m.othacehe@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
@ -218,7 +218,7 @@ procedure to expand it; otherwise return #f."
(define* (lower-object obj
#:optional (system (%current-system))
#:key target)
#:key (target 'current))
"Return as a value in %STORE-MONAD the derivation or store item
corresponding to OBJ for SYSTEM, cross-compiling for TARGET if TARGET is true.
OBJ must be an object that has an associated gexp compiler, such as a
@ -228,7 +228,10 @@ OBJ must be an object that has an associated gexp compiler, such as a
(raise (condition (&gexp-input-error (input obj)))))
(lower
;; Cache in STORE the result of lowering OBJ.
(mlet %store-monad ((graft? (grafting?)))
(mlet %store-monad ((target (if (eq? target 'current)
(current-target-system)
(return target)))
(graft? (grafting?)))
(mcached (let ((lower (lookup-compiler obj)))
(lower obj system target))
obj
@ -779,7 +782,8 @@ derivations--e.g., code evaluated for its side effects."
(extensions -> (gexp-extensions exp))
(exts (mapm %store-monad
(lambda (obj)
(lower-object obj system))
(lower-object obj system
#:target #f))
extensions))
(modules+compiled (imported+compiled-modules
%modules system
@ -1549,16 +1553,19 @@ are searched for in PATH. Return #f when MODULES and EXTENSIONS are empty."
#:key (guile (default-guile))
(module-path %load-path)
(system (%current-system))
target)
(target 'current))
"Return an executable script NAME that runs EXP using GUILE, with EXP's
imported modules in its search path. Look up EXP's modules in MODULE-PATH."
(mlet %store-monad ((set-load-path
(load-path-expression (gexp-modules exp)
module-path
#:extensions
(gexp-extensions exp)
#:system system
#:target target)))
(mlet* %store-monad ((target (if (eq? target 'current)
(current-target-system)
(return target)))
(set-load-path
(load-path-expression (gexp-modules exp)
module-path
#:extensions
(gexp-extensions exp)
#:system system
#:target target)))
(gexp->derivation name
(gexp
(call-with-output-file (ungexp output)
@ -1592,7 +1599,7 @@ imported modules in its search path. Look up EXP's modules in MODULE-PATH."
(module-path %load-path)
(splice? #f)
(system (%current-system))
target)
(target 'current))
"Return a derivation that builds a file NAME containing EXP. When SPLICE?
is true, EXP is considered to be a list of expressions that will be spliced in
the resulting file.
@ -1603,36 +1610,44 @@ Lookup EXP's modules in MODULE-PATH."
(define modules (gexp-modules exp))
(define extensions (gexp-extensions exp))
(if (or (not set-load-path?)
(and (null? modules) (null? extensions)))
(gexp->derivation name
(gexp
(call-with-output-file (ungexp output)
(lambda (port)
(for-each (lambda (exp)
(write exp port))
'(ungexp (if splice?
exp
(gexp ((ungexp exp)))))))))
#:local-build? #t
#:substitutable? #f
#:system system
#:target target)
(mlet %store-monad ((set-load-path
(load-path-expression modules module-path
#:extensions extensions
#:system system
#:target target)))
(mlet* %store-monad
((target (if (eq? target 'current)
(current-target-system)
(return target)))
(no-load-path? -> (or (not set-load-path?)
(and (null? modules)
(null? extensions))))
(set-load-path
(load-path-expression modules module-path
#:extensions extensions
#:system system
#:target target)))
(if no-load-path?
(gexp->derivation name
(gexp
(call-with-output-file (ungexp output)
(lambda (port)
(for-each
(lambda (exp)
(write exp port))
'(ungexp (if splice?
exp
(gexp ((ungexp exp)))))))))
#:local-build? #t
#:substitutable? #f
#:system system
#:target target)
(gexp->derivation name
(gexp
(call-with-output-file (ungexp output)
(lambda (port)
(write '(ungexp set-load-path) port)
(for-each (lambda (exp)
(write exp port))
'(ungexp (if splice?
exp
(gexp ((ungexp exp)))))))))
(for-each
(lambda (exp)
(write exp port))
'(ungexp (if splice?
exp
(gexp ((ungexp exp)))))))))
#:module-path module-path
#:local-build? #t
#:substitutable? #f

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@ -1331,6 +1331,56 @@
'#~(foo #$bar #$baz:out #$(chbouib 42) #$@(list x y z)
#+foo #+foo:out #+(chbouib 42) #+@(list x y z)))
(test-assertm "gexp->file, cross-compilation"
(mlet* %store-monad ((target -> "aarch64-linux-gnu")
(exp -> (gexp (list (ungexp coreutils))))
(xdrv (gexp->file "foo" exp #:target target))
(refs (references*
(derivation-file-name xdrv)))
(xcu (package->cross-derivation coreutils
target))
(cu (package->derivation coreutils)))
(return (and (member (derivation-file-name xcu) refs)
(not (member (derivation-file-name cu) refs))))))
(test-assertm "gexp->file, cross-compilation with default target"
(mlet* %store-monad ((target -> "aarch64-linux-gnu")
(_ (set-current-target target))
(exp -> (gexp (list (ungexp coreutils))))
(xdrv (gexp->file "foo" exp))
(refs (references*
(derivation-file-name xdrv)))
(xcu (package->cross-derivation coreutils
target))
(cu (package->derivation coreutils)))
(return (and (member (derivation-file-name xcu) refs)
(not (member (derivation-file-name cu) refs))))))
(test-assertm "gexp->script, cross-compilation"
(mlet* %store-monad ((target -> "aarch64-linux-gnu")
(exp -> (gexp (list (ungexp coreutils))))
(xdrv (gexp->script "foo" exp #:target target))
(refs (references*
(derivation-file-name xdrv)))
(xcu (package->cross-derivation coreutils
target))
(cu (package->derivation coreutils)))
(return (and (member (derivation-file-name xcu) refs)
(not (member (derivation-file-name cu) refs))))))
(test-assertm "gexp->script, cross-compilation with default target"
(mlet* %store-monad ((target -> "aarch64-linux-gnu")
(_ (set-current-target target))
(exp -> (gexp (list (ungexp coreutils))))
(xdrv (gexp->script "foo" exp))
(refs (references*
(derivation-file-name xdrv)))
(xcu (package->cross-derivation coreutils
target))
(cu (package->derivation coreutils)))
(return (and (member (derivation-file-name xcu) refs)
(not (member (derivation-file-name cu) refs))))))
(test-end "gexp")
;; Local Variables: