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Author SHA1 Message Date
Ludovic Courtès
4c0c4db070
utils: Move base16 procedures to (guix base16). 
* guix/utils.scm (bytevector->base16-string, base16-string->bytevector):
Move to...
* guix/base16.scm: ... here.  New file.
* tests/utils.scm ("bytevector->base16-string->bytevector"): Move to...
* tests/base16.scm: ... here.  New file.
* Makefile.am (MODULES): Add guix/base16.scm.
(SCM_TESTS): Add tests/base16.scm.
* build-aux/download.scm, guix/derivations.scm,
guix/docker.scm, guix/import/snix.scm, guix/pk-crypto.scm,
guix/scripts/authenticate.scm, guix/scripts/download.scm,
guix/scripts/hash.scm, guix/store.scm, tests/hash.scm,
tests/pk-crypto.scm: Adjust imports accordingly.
 2017-03-16 22:50:14 +01:00
Ludovic Courtès
55b2d92145
Use 'mlambda' instead of 'memoize'. 
* gnu/packages.scm (find-newest-available-packages): Use 'mlambda'
instead of (memoize (lambda ...) ...).
* gnu/packages/bootstrap.scm (package-with-bootstrap-guile): Likewise.
* guix/build-system/gnu.scm (package-with-explicit-inputs)[rewritten-input]:
Likewise.
* guix/build-system/python.scm (package-with-explicit-python)[transform]:
Likewise.
* guix/derivations.scm (derivation->string): Likewise.
* guix/gnu-maintenance.scm (gnu-package?): Likewise.
* guix/modules.scm (module-file-dependencies): Likewise.
* guix/scripts/graph.scm (standard-package-set): Likewise.
* guix/scripts/lint.scm (official-gnu-packages*): Likewise.
* guix/store.scm (store-regexp*): Likewise.
* guix/utils.scm (location): Likewise.
 2017-01-28 18:55:20 +01:00
Ludovic Courtès
f9704f179a
Add (guix memoization). 
* guix/combinators.scm (memoize): Remove.
* guix/memoization.scm: New file.
* Makefile.am (MODULES): Add it.
* gnu/packages.scm, gnu/packages/bootstrap.scm,
guix/build-system/gnu.scm, guix/build-system/python.scm,
guix/derivations.scm, guix/gnu-maintenance.scm,
guix/import/cran.scm, guix/import/elpa.scm,
guix/modules.scm, guix/scripts/build.scm,
guix/scripts/graph.scm, guix/scripts/lint.scm,
guix/store.scm, guix/utils.scm: Adjust imports accordingly.
 2017-01-28 18:55:20 +01:00
Mathieu Lirzin
dc673fa113
derivations: Make <derivation> record datatype immutable. 
* guix/derivations.scm (<derivation>): Make it immutable.
(derivation): Use generic 'set-field' instead of ad-hoc functional setter.
 2017-01-11 18:55:31 +01:00
Ludovic Courtès
76c31074c8
derivations: Share a cache between 'derivation' and 'read-derivation'. 
This leads a 13% speedup on 'guix build libreoffice -d' and 18% on
'guix build gnome -d'.

* guix/derivations.scm (%derivation-cache): New variable.
(read-derivation): Use it instead of the private 'cache' variable.
(derivation): Populate %DERIVATION-CACHE before returning.
 2017-01-05 23:45:39 +01:00
Ludovic Courtès
6d943e553d
derivations: Micro-optimize 'write-derivation'. 
* guix/derivations.scm (write-derivation)[write-input]: Use 'display'
instead of 'write' for PATH.
Use 'simple-format' instead of 'format', and '~a' instead of '~s' for
SYSTEM and BUILDER.
 2017-01-05 23:45:38 +01:00
Ludovic Courtès
713335fa61
derivations: Add 'raw-derivation'. 
* guix/derivations.scm (raw-derivation): New procedure.
* guix/download.scm (raw-derivation): Remove.
* guix/gexp.scm (raw-derivation): Remove.
 2016-11-19 18:44:53 +01:00
Ludovic Courtès
2535635f18
Use (ice-9 binary-ports) instead of (rnrs io ports). 
This reduces the closure of (guix ui) from 123 to 106 modules.

* guix/derivations.scm: Use (ice-9 binary-ports) instead of (rnrs io
ports).
(map-derivation)[substitute-file]: Use 'read-string' instead of
'get-string-all'.
* guix/ftp-client.scm: Likewise.
* guix/hash.scm: Likewise.
* guix/http-client.scm: Likewise.
* guix/pki.scm (ensure-acl, current-acl): Likewise.
* guix/scripts/archive.scm (authorize-key)[read-key]: Likewise.
* guix/scripts/authenticate.scm (read-canonical-sexp)
(read-hash-data): Likewise.
* guix/scripts/download.scm: Likewise.
* guix/scripts/offload.scm (register-gc-root, remove-gc-roots)
(send-files): Likewise.
* guix/scripts/publish.scm (lazy-read-file-sexp): Likewise.
* guix/scripts/refresh.scm: Likewise.
* guix/scripts/substitute.scm (check-acl-initialized): Likewise.
* guix/serialization.scm (read-maybe-utf8-string): Likewise.
* guix/scripts/hash.scm (guix-hash): Use 'force-output' instead of
'flush-output-port'.
* guix/store.scm (process-stderr): Likewise.
* guix/tests.scm: Likewise.
* guix/utils.scm: Use (ice-9 binary-ports) and autoload (rnrs io ports)
for 'make-custom-binary-input-port'.
 2016-10-19 15:54:10 +02:00
Ludovic Courtès
260bc60f83
derivations: Export 'fixed-output-path'. 
* guix/derivations.scm (fixed-output-path): Change 'output',
'hash-algo', and 'recursive?' to keyword parameters.  Export.
(derivation): Adjust accordingly.
 2016-07-20 16:39:19 +02:00
Ludovic Courtès
97507ebedc
derivations: 'derivation' sorts items in the resulting object. 
* guix/derivations.scm (derivation-input<?): New procedure.
(write-derivation)[coalesce-duplicate-inputs]: Remove.
Remove calls to 'sort'.
(coalesce-duplicate-inputs): New procedure.
(derivation-hash): Sort INPUTS and use 'coalesce-duplicate-inputs'.
(derivation)[input->derivation-input]
[coalesce-duplicate-inputs]: New procedures.
Sort OUTPUTS, INPUTS, and ENV-VARS.
* tests/derivations.scm ("read-derivation vs. derivation"): New test.
 2016-05-21 01:35:14 +02:00
Ludovic Courtès
958dd3ce68
utils: Move combinators to (guix combinators). 
* guix/utils.scm (compile-time-value, memoize, fold2)
(fold-tree, fold-tree-leaves): Move to...
* guix/combinators: ... here.  New file.
* tests/utils.scm ("fold2, 1 list", "fold2, 2 lists")
(fold-tree tests): Move to...
* tests/combinators.scm: ... here.  New file.
* Makefile.am (MODULES, SCM_TESTS): Add them.
* gnu/packages.scm, gnu/packages/bootstrap.scm,
gnu/services/herd.scm, guix/build-system/gnu.scm,
guix/build-system/python.scm, guix/derivations.scm,
guix/gnu-maintenance.scm, guix/import/elpa.scm,
guix/scripts/archive.scm, guix/scripts/build.scm,
guix/scripts/graph.scm, guix/scripts/lint.scm,
guix/scripts/size.scm, guix/scripts/substitute.scm,
guix/serialization.scm, guix/store.scm, guix/ui.scm: Adjust imports
accordingly.
 2016-05-04 23:35:55 +02:00
Ludovic Courtès
d26e19671e derivations: Raise an error when a module file is not found. 
Suggested by Jookia.

* guix/derivations.scm (&file-search-error): New error condition.
(search-path*): Raise it when 'search-path' returns #f.
* guix/gexp.scm (search-path*): Remove.
* guix/ui.scm (call-with-error-handling): Add case for
'file-search-error?'.
* tests/derivations.scm ("build-expression->derivation and invalid
module name"): New test.
 2016-03-23 00:23:12 +01:00
Ludovic Courtès
6985335faa derivations: Add 'module->source-file-name'. 
* guix/derivations.scm (module->source-file-name): New procedure.
(%imported-modules): Use it.
* guix/gexp.scm (imported-modules): Likewise.
 2016-03-23 00:23:12 +01:00
Ludovic Courtès
35b5ca7869 derivations: Add #:disallowed-references. 
* guix/derivations.scm (derivation): Add #:disallowed-references.
[user+system-env-vars]: Honor it.
(build-expression->derivation): Likewise.
* tests/derivations.scm ("derivation #:disallowed-references, ok")
("derivation #:disallowed-references, not ok"): New tests.
* doc/guix.texi (Derivations): Adjust accordingly.
 2016-03-20 22:45:35 +01:00
Ludovic Courtès
7adf9b8469 derivations: Move grafts to (guix grafts). 
* guix/derivations.scm (<graft>, graft-derivation, %graft?)
(set-grafting): Move to...
* guix/grafts.scm: ... here.  New file.
* guix/gexp.scm, guix/packages.scm, tests/packages.scm,
guix/scripts/build.scm: Use it.
* Makefile.am (MODULES): Add it.
(SCM_TESTS): Add tests/grafts.scm.
* tests/derivations.scm ("graft-derivation"): Move to...
* tests/grafts.scm: ... here.  New file.
 2016-02-22 22:11:37 +01:00
Ludovic Courtès
a8d65643fb guix build: Add '--check'. 
* guix/derivations.scm (build-derivations): Add optional 'mode'
parameter.
* guix/scripts/build.scm (%default-options): Add 'build-mode'.
(show-help, %options): Add '--check'.
(guix-build): Honor 'build-mode' key of OPTS.  Pass it to
'show-what-to-build' and 'build-derivations'.
* doc/guix.texi (Invoking guix build): Document it.
(Substitutes): Mention it.
 2015-12-09 14:29:41 +01:00
Ludovic Courtès
58c08df054 derivations: Determine what's built in 'check' mode. 
* guix/derivations.scm (substitution-oracle): Add #:mode parameter and
honor it.
(derivation-prerequisites-to-build): Likewise.
[derivation-built?]: Take it into account.
* guix/ui.scm (show-what-to-build): Add #:mode parameter.  Pass it to
'substitute-oracle' and 'derivations-prerequisites-to-build'.
* tests/derivations.scm ("derivation-prerequisites-to-build in 'check'
mode"): New test.
 2015-12-09 14:29:41 +01:00
Ludovic Courtès
1eabf4ec63 derivations: Improve docstring of 'substitution-oracle'. 
* guix/derivations.scm (substitution-oracle): Improve docstring.
 2015-07-22 22:56:41 +02:00
Ludovic Courtès
b59df2434a derivations: Improve complexity of 'substitution-oracle'. 
* guix/derivations.scm (substitution-oracle): Use a final 'concatenate'
  instead of repeated 'append's.
 2015-07-22 22:56:41 +02:00
Ludovic Courtès
4a6aeb670f derivations: Add #:substitutable?, distinguished from #:local-build?. 
Fixes <http://bugs.gnu.org/18747>.

* guix/derivations.scm (substitutable-derivation?): Rewrite to check for
  "allowSubstitutes".
  (derivation): Add #:substitutable? parameter.
  [user+system-env-vars]: Honor it.
  (build-expression->derivation): Add #:substitutable? and honor it.
* guix/gexp.scm (gexp->derivation): Likewise.
* tests/derivations.scm ("derivation-prerequisites-to-build and substitutes,
  non-substitutable build"): Use #:substitutable? instead of #:local-build?.
  ("substitutable-derivation?", "derivation-prerequisites-to-build and
  substitutes, local build"): New tests.
* guix/download.scm (url-fetch): Adjust comment.
* guix/git-download.scm (git-fetch): Likewise.
* guix/build-system/gnu.scm (gnu-build, gnu-cross-build): Use #:substitutable?
  instead of #:local-build?.
* doc/guix.texi (Derivations, G-Expressions): Adjust accordingly.
 2015-07-03 00:30:55 +02:00
Ludovic Courtès
c04681554d derivations: Add #:leaked-env-vars parameter. 
Suggested by Joshua Randall <jcrandall@alum.mit.edu>
in <http://bugs.gnu.org/20402>.

* guix/derivations.scm (derivation): Add #:leaked-env-vars parameter.
  [user+system-env-vars]: Honor it.
* guix/gexp.scm (gexp->derivation): Add #:leaked-env-vars and pass it to
  'raw-derivation'.
* doc/guix.texi (Derivations, G-Expressions): Adjust accordingly.
 2015-05-01 00:06:17 +02:00
Ludovic Courtès
c3a450fb49 derivations: 'substitution-oracle' now ignores sub-trees that are valid. 
Before that, "guix build qt", when only qt itself is missing, would lead
'substitution-oracle' to call 'substitutable-paths' with 318 items.
Now, this is down to 6 items, because it doesn't ask about prerequisites
that are already valid.

* guix/derivations.scm (substitution-oracle)[valid-input?,
  dependencies]: New procedures.
  Use 'dependencies' and remove call to 'remove'.
 2015-03-25 10:46:22 +01:00
Ludovic Courtès
3681db5d2c derivations: Add a 'cut?' parameter to 'derivation-prerequisites'. 
* guix/derivations.scm (valid-derivation-input?): New procedure.
  (derivation-prerequisites): Add 'cut?' parameter and honor it.
* tests/derivations.scm ("derivation-prerequisites and
  derivation-input-is-valid?"): New test.
 2015-03-25 10:46:22 +01:00
Ludovic Courtès
c7d1d88f6c derivations: Don't invoke the substituter when an item is already in store. 
Fixes <http://bugs.gnu.org/20188>.
Reported by Mark H Weaver <mhw@netris.org>.

* guix/derivations.scm (substitution-oracle): Add 'valid?' procedure.
  Remove 'valid?' items from PATHS.
 2015-03-24 23:22:23 +01:00
Ludovic Courtès
9d8100f4c7 packages: Move grafting parameter to (guix derivations). 
* guix/packages.scm (%graft?, set-grafting): Move to...
* guix/derivations.scm: ... here.
 2015-03-17 22:25:55 +01:00
Ludovic Courtès
aa72d9afdf gexp: Implement 'imported-modules' & co. using 'gexp->derivation'. 
* guix/derivations.scm (imported-files): Keep private.
  (%imported-modules, %compiled-modules, build-expression->derivation):
  Mark as deprecated.
  (imported-modules, compiled-modules): Remove.
* guix/gexp.scm (%mkdir-p-definition): New variable.
  (imported-files, search-path*, imported-modules, compiled-modules):
  New procedures.
* tests/derivations.scm ("imported-files"): Remove.
* tests/gexp.scm ("imported-files", "gexp->derivation #:modules"): New
  tests.
 2015-02-13 17:28:19 +01:00
Ludovic Courtès
fbe952c99f derivations: Make the "grafting..." message directly visible. 
* guix/derivations.scm (graft-derivation)[build]: Add call to
  'force-output'.
 2015-02-11 11:11:01 +01:00
Ludovic Courtès
01d8ac64ab store: Remove 'build-derivations'. 
* guix/store.scm (build-derivations): Remove.
* guix/derivations.scm (build-derivations): Write in terms of
  'build-things'.
* doc/guix.texi (Invoking guix build): Adjust text accordingly.
 2015-02-02 12:46:36 +01:00
Ludovic Courtès
f304c9c237 derivations: Raise an error for references to non-existent outputs. 
Fixes <http://bugs.gnu.org/19630>.
Reported by Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de>.

* guix/derivations.scm (&derivation-error,
  &derivation-missing-output-error): New error conditions.
  (derivation->output-path): Raise a '&derivation-missing-output-error'
  if OUTPUT is not an output of DRV.
* guix/ui.scm (call-with-error-handling): Add case for
  'derivation-missing-output-error?'.
  (show-what-to-build): Check whether (derivation-outputs drv) is
  empty.
* tests/packages.scm ("reference to non-existent output"): Add test.
 2015-01-24 22:57:49 +01:00
Ludovic Courtès
e87f0591f3 monads: Move '%store-monad' and related procedures where they belong. 
This turns (guix monads) into a generic module for monads, and moves the
store monad and related monadic procedures in their corresponding
module.

* guix/monads.scm (store-return, store-bind, %store-monad, store-lift,
  text-file, interned-file, package-file, package->derivation,
  package->cross-derivation, origin->derivation, imported-modules,
  compiled, modules, built-derivations, run-with-store): Move to...
* guix/store.scm (store-return, store-bind, %store-monad, store-lift,
  text-file, interned-file): ... here.
  (%guile-for-build): New variable.
  (run-with-store): Moved from monads.scm.  Remove default value for
  #:guile-for-build.
* guix/packages.scm (default-guile): Export.
  (set-guile-for-build): New procedure.
  (package-file, package->derivation, package->cross-derivation,
  origin->derivation): Moved from monads.scm.
* guix/derivations.scm (%guile-for-build): Remove.
  (imported-modules): Rename to...
  (%imported-modules): ... this.
  (compiled-modules): Rename to...
  (%compiled-modules): ... this.
  (built-derivations, imported-modules, compiled-modules): New
  procedures.
* gnu/services/avahi.scm, gnu/services/base.scm, gnu/services/dbus.scm,
  gnu/services/dmd.scm, gnu/services/networking.scm,
  gnu/services/ssh.scm, gnu/services/xorg.scm, gnu/system/install.scm,
  gnu/system/linux-initrd.scm, gnu/system/shadow.scm, guix/download.scm,
  guix/gexp.scm, guix/git-download.scm, guix/profiles.scm,
  guix/svn-download.scm, tests/monads.scm: Adjust imports accordingly.
* guix/monad-repl.scm (default-guile-derivation): New procedure.
  (store-monad-language, run-in-store): Use it.
* build-aux/hydra/gnu-system.scm (qemu-jobs): Add explicit
  'set-guile-for-build' call.
* guix/scripts/archive.scm (derivation-from-expression): Likewise.
* guix/scripts/build.scm (options/resolve-packages): Likewise.
* guix/scripts/environment.scm (guix-environment): Likewise.
* guix/scripts/system.scm (guix-system): Likewise.
* doc/guix.texi (The Store Monad): Adjust module names accordingly.
 2015-01-14 13:34:52 +01:00
Ludovic Courtès
c06d140c03 derivations: Use a set for 'substitution-oracle'. 
* guix/derivations.scm (substitution-oracle): Use sets instead of lists.
 2015-01-11 23:50:01 +01:00
Ludovic Courtès
ed3592a980 derivations: Use sets for 'derivations-prerequisites'. 
This yields a 46% improvement in 'derivation-prerequisites' invocations
on the Emacs derivation.

* guix/derivations.scm (derivation-prerequisites): Add 'input-set'
  variable, and use it in iterations.
 2015-01-11 23:50:01 +01:00
Ludovic Courtès
e9651e39b3 derivations: Add 'substitution-oracle' and use it. 
This makes 'guix environment PACKAGE' significantly faster when
substitutes are enabled.  Before that, it would lead to many invocations
of 'guix substitute-binary', one per 'derivation-prerequisites-to-build'
call.  Now, all these are replaced by a single invocation.

* guix/derivations.scm (derivation-output-paths, substitution-oracle):
  New procedures.
  (derivation-prerequisites-to-build): Replace #:use-substitutes? with
  #:substitutable?.  Remove the local 'derivation-output-paths' and
  'substitutable?'.
* guix/ui.scm (show-what-to-build): Add 'substitutable?'.  Pass it to
  'derivation-prerequisites-to-build'.
  [built-or-substitutable?]: Use it instead of 'has-substitutes?'.
* tests/derivations.scm ("derivation-prerequisites-to-build and
  substitutes"): Use #:substitutable? instead of #:use-substitutes?.
 2015-01-10 00:39:59 +01:00
Ludovic Courtès
0b6af195fe derivations: Add 'derivation-output-names'. 
* guix/derivations.scm (derivation-output-names): New procedure.
  (derivation-prerequisites-to-build): Use it for #:outputs.
  (map-derivation): Likewise.
* tests/derivations.scm ("derivation-output-names"): New test.
 2015-01-09 23:36:24 +01:00
Ludovic Courtès
7ce7361b76 derivations: Export 'derivation-builder'. 
* guix/derivations.scm: Export 'derivation-builder'.
 2014-12-02 16:51:43 +01:00
Ludovic Courtès
7f614a747c derivations: Clarify message produced by 'graft-derivation'. 
* guix/derivations.scm (graft-derivation): Use the term "grafting" in
  the build message.
 2014-11-13 11:35:13 +01:00
Ludovic Courtès
e786293e76 derivations: Add 'derivation-name'. 
* guix/derivations.scm (derivation-name): New procedure.
* tests/derivations.scm ("derivation-name"): New test.
 2014-11-02 21:22:12 +01:00
Ludovic Courtès
d2d0514b58 derivations: Fix 'derivation-prerequisites-to-build' when #:local-build?. 
* guix/derivations.scm (derivation-prerequisites-to-build)[derivation-substitutable?]:
  Call 'substitutable-derivation?'.
  <body>: When 'substitutable-derivation?' returns #f, add DRV to BUILD.
 2014-10-29 00:31:23 +01:00
Ludovic Courtès
fc93e30919 derivations: Add 'offloadable-derivation?' and 'substitutable-derivation?'. 
* guix/derivations.scm (offloadable-derivation?,
  substitutable-derivation?): New procedures.
* tests/derivations.scm ("offloadable-derivation?"): New test.
 2014-10-29 00:31:23 +01:00
Ludovic Courtès
e5997888fa derivations: 'graft-derivation' correctly handles multiple-output sources. 
* guix/derivations.scm (graft-derivation): Add DRV as input for each one
  of OUTPUT-NAMES.
 2014-10-17 23:23:20 +02:00
Ludovic Courtès
3d7d17b318 derivations: Add #:system parameter to 'graft-derivation'. 
* guix/derivations.scm (graft-derivation): Add #:system parameter.
 2014-10-17 23:23:20 +02:00
Ludovic Courtès
969df97487 derivations: Introduce 'graft' record type. 
* guix/derivations.scm (<graft>): New record type.
  (graft-derivation): Rename 'replacements' to 'grafts', and expect it
  to be a list of <graft> records.  Adjust accordingly.
* tests/derivations.scm ("graft-derivation"): Use 'graft' instead of
  pairs in argument to 'graft-derivation'.
 2014-10-17 23:23:20 +02:00
Ludovic Courtès
8601d0ddcf derivations: Micro-optimize 'imported-modules'. 
This reduces run time of (package-derivation s emacs) by ~5%.

* guix/derivations.scm (search-path*): New procedure.
  (imported-modules): Use it instead of 'search-path'.
 2014-10-13 23:34:09 +02:00
Ludovic Courtès
1391dcb054 derivations: Memoize 'derivation-path->base16-hash'. 
This reduces run time of (package-derivation s emacs) by ~10%.

* guix/derivations.scm (derivation-path->base16-hash): New procedure.
  (derivation-hash): Use it.
 2014-10-13 23:34:09 +02:00
Ludovic Courtès
78a90c7f47 derivations: Add #:guile parameter to 'graft-derivation'. 
* guix/derivations.scm (graft-derivation): Add #:guile parameter; pass
  it to 'build-expression->derivation'.
 2014-10-12 22:32:38 +02:00
Ludovic Courtès
fb59e275dd derivations: Add 'graft-derivation'. 
* guix/derivations.scm (graft-derivation): New procedure.
* guix/build/graft.scm: New file.
* Makefile.am (MODULES): Add it.
* tests/derivations.scm ("graft-derivation"): New test.
 2014-10-08 12:01:49 +02:00
Ludovic Courtès
63a4282468 derivations: 'build-expression->derivation' supports #:allowed-references. 
* guix/derivations.scm (build-expression->derivation): Add
  #:allowed-references and pass it to 'derivation.
* doc/guix.texi (Derivations): Adjust accordingly.
 2014-06-06 17:07:26 +02:00
Ludovic Courtès
b53be755e4 derivations: Add #:allowed-references 'derivation' parameter. 
* guix/derivations.scm (derivation): Add #:allowed-references
  parameter.
  [user+system-env-vars]: Honor it.
* tests/derivations.scm ("derivation #:allowed-references, ok",
  "derivation #:allowed-references, not allowed",
  "derivation #:allowed-references, self allowed",
  "derivation #:allowed-references, self not allowed"): New tests.
* doc/guix.texi (Derivations): Document #:allowed-references.
 2014-06-01 23:32:26 +02:00
Ludovic Courtès
be4e38fb6f derivations: Micro-optimize 'derivation'. 
* guix/derivations.scm (derivation->string): New procedure.
  (derivation-hash, derivation): Use it.
  Memoization here yields a 5% improvement on "guix build -e '(@ (gnu
  packages emacs) emacs)' -n --no-substitutes".
 2014-04-29 18:13:10 +02:00
Ludovic Courtès
99e17dc927 derivations: Fix 'fixed-output-derivation?'. 
Reported by Nikita Karetnikov <nikita@karetnikov.org>.

* guix/derivations.scm (fixed-output-derivation?): Fix pattern.
* tests/derivations.scm ("fixed-output-derivation?"): Add test.
 2014-04-13 00:42:07 +02:00