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derivations: Add 'derivation-name'.
* guix/derivations.scm (derivation-name): New procedure. * tests/derivations.scm ("derivation-name"): New test.
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2 changed files with 11 additions and 0 deletions
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@ -56,6 +56,7 @@ (define-module (guix derivations)
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derivation-input-sub-derivations
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derivation-input-output-paths
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derivation-name
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fixed-output-derivation?
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offloadable-derivation?
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substitutable-derivation?
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@ -128,6 +129,11 @@ (define-record-type <derivation-input>
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(derivation-outputs drv)))
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(number->string (object-address drv) 16))))
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(define (derivation-name drv)
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"Return the base name of DRV."
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(let ((base (store-path-package-name (derivation-file-name drv))))
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(string-drop-right base 4)))
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(define (fixed-output-derivation? drv)
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"Return #t if DRV is a fixed-output derivation, such as the result of a
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download with a fixed hash (aka. `fetchurl')."
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@ -173,6 +173,11 @@ (define prefix-len (string-length dir))
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(= (stat:ino (lstat file1))
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(stat:ino (lstat file2))))))))
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(test-equal "derivation-name"
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"foo-0.0"
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(let ((drv (derivation %store "foo-0.0" %bash '())))
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(derivation-name drv)))
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(test-assert "offloadable-derivation?"
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(and (offloadable-derivation? (derivation %store "foo" %bash '()))
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(not (offloadable-derivation?
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