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gexp: Add 'load-path?' field to <scheme-file>.

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* guix/gexp.scm (<scheme-file>)[load-path?]: New field.
(scheme-file): Add #:set-load-path? and honor it.
(scheme-file-compiler): Pass #:set-load-path? to 'gexp->file'.
* doc/guix.texi (G-Expressions): Document it.
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Ludovic Courtès 2020-04-22 15:24:47 +02:00
parent f916ac128a
commit 34faf63ebc
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2 changed files with 9 additions and 6 deletions
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3
doc/guix.texi
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@ -7955,7 +7955,8 @@ The resulting file holds references to all the dependencies of @var{exp}
or a subset thereof.
@end deffn
@deffn {Scheme Procedure} scheme-file @var{name} @var{exp} [#:splice? #f]
@deffn {Scheme Procedure} scheme-file @var{name} @var{exp} @
[#:splice? #f] [#:set-load-path? #t]
Return an object representing the Scheme file @var{name} that contains
@var{exp}.

12
guix/gexp.scm
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@ -472,24 +472,26 @@ (define-gexp-compiler (program-file-compiler (file <program-file>)
#:target target))))
(define-record-type <scheme-file>
(%scheme-file name gexp splice?)
(%scheme-file name gexp splice? load-path?)
scheme-file?
(name scheme-file-name) ;string
(gexp scheme-file-gexp) ;gexp
(splice? scheme-file-splice?)) ;Boolean
(splice? scheme-file-splice?) ;Boolean
(load-path? scheme-file-set-load-path?)) ;Boolean
(define* (scheme-file name gexp #:key splice?)
(define* (scheme-file name gexp #:key splice? (set-load-path? #t))
"Return an object representing the Scheme file NAME that contains GEXP.
This is the declarative counterpart of 'gexp->file'."
(%scheme-file name gexp splice?))
(%scheme-file name gexp splice? set-load-path?))
(define-gexp-compiler (scheme-file-compiler (file <scheme-file>)
system target)
;; Compile FILE by returning a derivation that builds the file.
(match file
(($ <scheme-file> name gexp splice?)
(($ <scheme-file> name gexp splice? set-load-path?)
(gexp->file name gexp
#:set-load-path? set-load-path?
#:splice? splice?
#:system system
#:target target))))