gexp: 'scheme-file' can splice expressions.
* guix/gexp.scm (<scheme-file>)[splice?]: New field.
(scheme-file): Add #:splice? and pass it to '%scheme-file'.
(scheme-file-compiler): Pass SPLICE? to 'gexp->file'.
(gexp->file): Add #:splice? and honor it.
* tests/gexp.scm ("gexp->file + #:splice?"): New test.
("gexp->derivation & with-imported-module & computed module"): Use
#:splice? #t.
This commit is contained in:
Ludovic Courtès
parent
a1639ae9de
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4fbd1a2b7f
@ -5221,8 +5221,12 @@ This is the declarative counterpart of @code{gexp->script}.
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@deffn {Monadic Procedure} gexp->file @var{name} @var{exp} @
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[#:set-load-path? #t] [#:module-path %load-path] @
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[#:splice? #f] @
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[#:guile (default-guile)]
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Return a derivation that builds a file @var{name} containing @var{exp}.
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When @var{splice?} is true, @var{exp} is considered to be a list of
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expressions that will be spliced in the resulting file.
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When @var{set-load-path?} is true, emit code in the resulting file to
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set @code{%load-path} and @code{%load-compiled-path} to honor
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@var{exp}'s imported modules. Look up @var{exp}'s modules in
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@ -5232,7 +5236,7 @@ The resulting file holds references to all the dependencies of @var{exp}
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or a subset thereof.
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@end deffn
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@deffn {Scheme Procedure} scheme-file @var{name} @var{exp}
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@deffn {Scheme Procedure} scheme-file @var{name} @var{exp} [#:splice? #f]
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Return an object representing the Scheme file @var{name} that contains
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@var{exp}.
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@ -406,23 +406,24 @@ This is the declarative counterpart of 'gexp->script'."
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#:guile (or guile (default-guile))))))
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(define-record-type <scheme-file>
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(%scheme-file name gexp)
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(%scheme-file name gexp splice?)
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scheme-file?
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(name scheme-file-name) ;string
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(gexp scheme-file-gexp)) ;gexp
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(gexp scheme-file-gexp) ;gexp
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(splice? scheme-file-splice?)) ;Boolean
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(define* (scheme-file name gexp)
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(define* (scheme-file name gexp #:key splice?)
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"Return an object representing the Scheme file NAME that contains GEXP.
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This is the declarative counterpart of 'gexp->file'."
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(%scheme-file name gexp))
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(%scheme-file name gexp splice?))
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(define-gexp-compiler (scheme-file-compiler (file <scheme-file>)
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system target)
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;; Compile FILE by returning a derivation that builds the file.
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(match file
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(($ <scheme-file> name gexp)
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(gexp->file name gexp))))
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(($ <scheme-file> name gexp splice?)
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(gexp->file name gexp #:splice? splice?))))
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;; Appending SUFFIX to BASE's output file name.
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(define-record-type <file-append>
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@ -1162,18 +1163,26 @@ imported modules in its search path. Look up EXP's modules in MODULE-PATH."
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(define* (gexp->file name exp #:key
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(set-load-path? #t)
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(module-path %load-path))
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"Return a derivation that builds a file NAME containing EXP. When
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SET-LOAD-PATH? is true, emit code in the resulting file to set '%load-path'
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and '%load-compiled-path' to honor EXP's imported modules. Lookup EXP's
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modules in MODULE-PATH."
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(module-path %load-path)
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(splice? #f))
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"Return a derivation that builds a file NAME containing EXP. When SPLICE?
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is true, EXP is considered to be a list of expressions that will be spliced in
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the resulting file.
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When SET-LOAD-PATH? is true, emit code in the resulting file to set
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'%load-path' and '%load-compiled-path' to honor EXP's imported modules.
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Lookup EXP's modules in MODULE-PATH."
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(match (if set-load-path? (gexp-modules exp) '())
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(() ;zero modules
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(gexp->derivation name
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(gexp
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(call-with-output-file (ungexp output)
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(lambda (port)
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(write '(ungexp exp) port))))
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(for-each (lambda (exp)
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(write exp port))
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'(ungexp (if splice?
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exp
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(gexp ((ungexp exp)))))))))
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#:local-build? #t
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#:substitutable? #f))
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((modules ...)
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@ -1184,7 +1193,11 @@ modules in MODULE-PATH."
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(call-with-output-file (ungexp output)
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(lambda (port)
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(write '(ungexp set-load-path) port)
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(write '(ungexp exp) port))))
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(for-each (lambda (exp)
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(write exp port))
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'(ungexp (if splice?
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exp
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(gexp ((ungexp exp)))))))))
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#:module-path module-path
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#:local-build? #t
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#:substitutable? #f)))))
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@ -419,6 +419,24 @@
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(call-with-input-file out read))
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(equal? (list guile) refs)))))
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(test-assertm "gexp->file + #:splice?"
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(mlet* %store-monad ((exp -> (list
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#~(define foo 'bar)
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#~(define guile #$%bootstrap-guile)))
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(guile (package-file %bootstrap-guile))
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(drv (gexp->file "splice" exp #:splice? #t))
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(out -> (derivation->output-path drv))
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(done (built-derivations (list drv)))
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(refs (references* out)))
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(pk 'splice out)
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(return (and (equal? `((define foo 'bar)
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(define guile ,guile)
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,(call-with-input-string "" read))
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(call-with-input-file out
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(lambda (port)
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(list (read port) (read port) (read port)))))
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(equal? (list guile) refs)))))
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(test-assertm "gexp->derivation"
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(mlet* %store-monad ((file (text-file "foo" "Hello, world!"))
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(exp -> (gexp
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@ -700,11 +718,12 @@
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(test-assertm "gexp->derivation & with-imported-module & computed module"
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(mlet* %store-monad
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((module -> (scheme-file "x" #~(begin
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((module -> (scheme-file "x" #~(;; splice!
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(define-module (foo bar)
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#:export (the-answer))
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(define the-answer 42))))
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(define the-answer 42))
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#:splice? #t))
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(build -> (with-imported-modules `(((foo bar) => ,module)
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(guix build utils))
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#~(begin
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