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monads: Rewrite 'text-file*' using gexps.
* guix/monads.scm (text-file*): Move to...
* guix/gexp.scm (text-file*): ... here. Rewrite using gexps.
* tests/monads.scm ("text-file*"): Move to...
* tests/gexp.scm ("text-file*"): ... here.
This commit is contained in:
Ludovic Courtès
parent
4a4dd5d89d
commit
462a3fa36c
4 changed files with 42 additions and 80 deletions
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@ -1,5 +1,5 @@
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;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2014 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2014, 2015 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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@ -33,7 +33,8 @@ (define-module (guix gexp)
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gexp?
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gexp->derivation
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gexp->file
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gexp->script))
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gexp->script
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text-file*))
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;;; Commentary:
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;;;
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@ -522,6 +523,18 @@ (define (gexp->file name exp)
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(write '(ungexp exp) port))))
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#:local-build? #t))
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(define* (text-file* name #:rest text)
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"Return as a monadic value a derivation that builds a text file containing
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all of TEXT. TEXT may list, in addition to strings, packages, derivations,
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and store file names; the resulting store file holds references to all these."
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(define builder
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(gexp (call-with-output-file (ungexp output "out")
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(lambda (port)
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(display (string-append (ungexp-splicing text)) port)))))
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(gexp->derivation name builder))
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;;;
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;;; Syntactic sugar.
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@ -1,5 +1,5 @@
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;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2013, 2014 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2013, 2014, 2015 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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@ -57,7 +57,6 @@ (define-module (guix monads)
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store-lift
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run-with-store
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text-file
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text-file*
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interned-file
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package-file
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origin->derivation
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@ -357,56 +356,6 @@ (define* (text-file name text)
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(lambda (store)
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(add-text-to-store store name text '())))
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(define* (text-file* name #:rest text)
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"Return as a monadic value a derivation that builds a text file containing
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all of TEXT. TEXT may list, in addition to strings, packages, derivations,
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and store file names; the resulting store file holds references to all these."
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(define inputs
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;; Transform packages and derivations from TEXT into a valid input list.
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(filter-map (match-lambda
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((? package? p) `("x" ,p))
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((? derivation? d) `("x" ,d))
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((x ...) `("x" ,@x))
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((? string? s)
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(and (direct-store-path? s) `("x" ,s)))
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(x x))
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text))
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(define (computed-text text inputs)
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;; Using the lowered INPUTS, return TEXT with derivations replaced with
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;; their output file name.
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(define (real-string? s)
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(and (string? s) (not (direct-store-path? s))))
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(let loop ((inputs inputs)
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(text text)
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(result '()))
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(match text
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(()
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(string-concatenate-reverse result))
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(((? real-string? head) rest ...)
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(loop inputs rest (cons head result)))
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((_ rest ...)
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(match inputs
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(((_ (? derivation? drv) sub-drv ...) inputs ...)
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(loop inputs rest
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(cons (apply derivation->output-path drv
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sub-drv)
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result)))
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(((_ file) inputs ...)
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;; FILE is the result of 'add-text-to-store' or so.
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(loop inputs rest (cons file result))))))))
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(define (builder inputs)
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`(call-with-output-file (assoc-ref %outputs "out")
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(lambda (port)
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(display ,(computed-text text inputs) port))))
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;; TODO: Rewrite using 'gexp->derivation'.
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(mlet %store-monad ((inputs (lower-inputs inputs)))
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(derivation-expression name (builder inputs)
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#:inputs inputs)))
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(define* (interned-file file #:optional name
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#:key (recursive? #t))
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"Return the name of FILE once interned in the store. Use NAME as its store
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@ -1,5 +1,5 @@
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;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2014 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2014, 2015 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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@ -421,6 +421,30 @@ (define shebang
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(return (and (zero? (close-pipe pipe))
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(= (expt n 2) (string->number str)))))))
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(test-assert "text-file*"
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(let ((references (store-lift references)))
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(run-with-store %store
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(mlet* %store-monad
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((drv (package->derivation %bootstrap-guile))
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(guile -> (derivation->output-path drv))
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(file (text-file "bar" "This is bar."))
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(text (text-file* "foo"
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%bootstrap-guile "/bin/guile "
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`(,%bootstrap-guile "out") "/bin/guile "
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drv "/bin/guile "
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file))
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(done (built-derivations (list text)))
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(out -> (derivation->output-path text))
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(refs (references out)))
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;; Make sure we get the right references and the right content.
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(return (and (lset= string=? refs (list guile file))
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(equal? (call-with-input-file out get-string-all)
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(string-append guile "/bin/guile "
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guile "/bin/guile "
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guile "/bin/guile "
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file)))))
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#:guile-for-build (package-derivation %store %bootstrap-guile))))
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(test-assert "printer"
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(string-match "^#<gexp \\(string-append .*#<package coreutils.*\
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\"/bin/uname\"\\) [[:xdigit:]]+>$"
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@ -1,5 +1,5 @@
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;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2013, 2014 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2013, 2014, 2015 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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@ -177,30 +177,6 @@ (define derivation-expression
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(readlink (string-append out "/guile-rocks"))))))
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#:guile-for-build (package-derivation %store %bootstrap-guile)))
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(test-assert "text-file*"
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(let ((references (store-lift references)))
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(run-with-store %store
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(mlet* %store-monad
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((drv (package->derivation %bootstrap-guile))
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(guile -> (derivation->output-path drv))
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(file (text-file "bar" "This is bar."))
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(text (text-file* "foo"
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%bootstrap-guile "/bin/guile "
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`(,%bootstrap-guile "out") "/bin/guile "
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drv "/bin/guile "
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file))
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(done (built-derivations (list text)))
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(out -> (derivation->output-path text))
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(refs (references out)))
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;; Make sure we get the right references and the right content.
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(return (and (lset= string=? refs (list guile file))
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(equal? (call-with-input-file out get-string-all)
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(string-append guile "/bin/guile "
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guile "/bin/guile "
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guile "/bin/guile "
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file)))))
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#:guile-for-build (package-derivation %store %bootstrap-guile))))
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(test-assert "mapm"
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(every (lambda (monad run)
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(with-monad monad
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