* 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".
* gnu/packages/gcc.scm (gcc-4.7): Change /nix/store in comment.
* gnu/system/vm.scm (operating-system-default-contents):
Use (%store-prefix) instead of "/nix/store".
* guix/derivations.scm (derivation-path->output-path,
derivation-path->output-paths): Change to /gnu/store in docstring.
* guix/derivations.scm (<derivation-output>): Add 'recursive?' field.
Adjust 'make-derivation-output' callers.
(%read-derivation) <fixed-output>: When HASH-ALGO starts with 'r:',
set the 'recursive?' field and drop 'r:' from the hash algo name.
(write-derivation)[write-output]: Write the algo as 'r:HASH-ALGO' when
the RECURSIVE? field is set.
(derivation-hash) <fixed-output>: Prepend "r:" when RECURSIVE? is set.
(fixed-output-path): New procedure.
(derivation): Add #:recursive? parameter. Use 'fixed-output-path' to
compute the output file name of a fixed output derivation.
(build-expression->derivation): Add #:recursive? parameter. Pass it
to 'derivation'.
* tests/derivations.scm ("fixed-output derivation, recursive",
"build-expression->derivation produces recursive fixed-output",
"build-expression->derivation uses recursive fixed-output"): New
tests.
* doc/guix.texi (Derivations): Document #:recursive? for 'derivation'.
Add #:recursive? for 'build-expression->derivation'.
* guix/derivations.scm (derivation): Add #:local-build? parameter and
honor it.
(build-expression->derivation): Likewise.
* doc/guix.texi (Derivations): Update documentation of these
procedures.
* guix/derivations.scm (map-derivation)[input->output-paths]: Allow
non-derivation inputs.
Allow replacements to be store files. Replace in SOURCES too.
* tests/derivations.scm ("map-derivation, sources"): New test.
* guix/derivations.scm (derivation->output-path,
derivation->output-paths): New procedures.
(derivation-path->output-path): Use 'derivation->output-path'.
(derivation-path->output-paths): Use 'derivation->output-paths'.
(derivation): Accept 'derivation?' objects as inputs. Return a single
value.
(build-derivations): New procedure.
(compiled-modules): Use 'derivation->output-paths'.
(build-expression->derivation)[source-path]: Add case for when the
input matches 'derivation?'.
[prologue]: Accept 'derivation?' objects in INPUTS.
[mod-dir, go-dir]: Use 'derivation->output-path'.
* guix/download.scm (url-fetch): Adjust to the single-value return.
* guix/packages.scm (package-output): Use 'derivation->output-path'.
* guix/scripts/build.scm (guix-build): When the argument is
'derivation-path?', pass it through 'read-derivation'.
Use 'derivation-file-name' to print out the .drv file names, and to
register them. Use 'derivation->output-path' instead of
'derivation-path->output-path'.
* guix/scripts/package.scm (roll-back): Adjust to the single-value
return.
(guix-package): Use 'derivation->output-path'.
* guix/ui.scm (show-what-to-build): Adjust to deal with 'derivation?'
objects instead of .drv file names.
* gnu/system/grub.scm (grub-configuration-file): Use
'derivation->output-path' instead of 'derivation-path->output-path'.
* gnu/system/vm.scm (qemu-image, system-qemu-image): Likewise.
* tests/builders.scm, tests/derivations.scm, tests/packages.scm,
tests/store.scm, tests/union.scm: Adjust to the new calling
convention.
* doc/guix.texi (Defining Packages, The Store, Derivations): Adjust
accordingly.
* guix/derivations.scm (<derivation>): Add 'file-name' field.
(%read-derivation): Use (port-filename DRV-PORT) as the file name for
the result.
(derivation): Set the 'file-name' field in the result.
* tests/derivations.scm ("build derivation with 1 source"): Assert that
'derivation-file-name' returns the right thing.
* guix/derivations.scm (derivation, build-expression->derivation):
Rename #:dependency-graphs to #:references-graphs, for consistency in
the terminology.
* tests/derivations.scm: Adjust accordingly.
* guix/derivations.scm (derivation): Add `dependency-graphs' keyword
parameter; honor it.
* tests/derivations.scm (bootstrap-binary): New procedure.
(%bash): Use it.
(%mkdir): New variable.
(directory-contents): Add `slurp' optional parameter.
("derivation with #:dependency-graphs"): New test.
* doc/guix.texi (Derivations): Update accordingly.
* guix/derivations.scm (derivation-hash): Add comment as to why we keep
the plain `sha256' call.
* guix/scripts/download.scm (guix-download): Use `port-sha256' instead
of (compose sha256 get-bytevector-all).
* guix/scripts/refresh.scm (update-package): Likewise.
* guix/derivations.scm (derivation-input-output-paths): New procedure.
(derivation-prerequisites-to-build): New `use-substitutes?' keyword
argument. Change two return the list of substitutable paths as a
second argument.
* guix/ui.scm (show-what-to-build): Turn `dry-run?' into a keyword
argument. New `use-substitutes?' keyword argument. Use `fold2' and
adjust to use both return values of
`derivation-prerequisites-to-build'. Display what will/would be
downloaded.
* guix/scripts/build.scm (guix-build): Adjust accordingly.
* guix/scripts/package.scm (guix-package): Likewise.
* tests/derivations.scm ("derivation-prerequisites-to-build and
substitutes"): New test.
This reduces the execution time of
"guix build -e '(@ (gnu packages emacs) emacs)' -d" by 6%, from
1.15s to 1.08s.
* guix/derivations.scm (build-expression->derivation): Write the builder
as UTF-8.
This reduces the execution time of
"guix build -e '(@ (gnu packages emacs) emacs)' -d" by 25%, from
1.54 s. to 1.15s.
* guix/derivations.scm (write-sequence, write-list, write-tuple): New
procedures.
(write-derivation)[list->string, write-list]: Remove.
[write-string-list, write-output, write-input, write-env-var]: New helpers.
Rewrite in terms of these new helpers.
* guix/derivations.scm (read-derivation): Rename to...
(%read-derivation): ... this.
(read-derivation): New procedure.
This reduces the execution of "guix-build gdb" from 2.5s to 1.7s.
* guix/store.scm (add-to-store): Remove the `fixed?' parameter from the
public interface.
* gnu/packages/bootstrap.scm, guix-download.in, guix/derivations.scm,
guix/packages.scm, tests/derivations.scm: Update all callers
accordingly.
Before it would list inputs not built, even if the outputs of the given
derivation were already available.
* guix/derivations.scm (derivation-prerequisites-to-build): Add
`outputs' keyword parameter.
[built?, derivation-built?]: New procedures.
[loop]: Add `sub-drvs' parameter. Use `derivation-built?' to check if
the SUB-DRVS of DRV are built before checking its inputs.
* guix/derivations.scm (derivation)[inputs]: Fix typo in call to
`add-to-store'.
* tests/derivations.scm ("derivation with local file as input"): New test.
* tests/packages.scm ("trivial with local file as input"): New test.
* guix/derivations.scm (build-expression->derivation)[source-path]: New
procedure.
[builder]: Pass only sources as references. This fixes a bug whereby
changing a fixed-output drv referred to by a builder would cause the
builder's hash to change, thereby leading to a full rebuild.
* tests/derivations.scm ("build-expression->derivation with a
fixed-output input"): New test.
* guix/derivations.scm (imported-files): Call
`build-expression->derivation' with SYSTEM, not (%current-system).
(build-expression->derivation): Pass SYSTEM to `imported-modules' and
`compiled-modules'.
* guix/derivations.scm (%guile-for-build): Initialize to #f.
(imported-files, imported-modules, compiled-modules): Add `guile'
keyword parameter. Pass it down to `build-expression->derivation'.
(build-expression->derivation)[guile-drv]: New variable. Pass it as
the #:guile parameter for `imported-modules' and `compiled-modules'.
* tests/derivations.scm: Set %GUILE-FOR-BUILD to the derivation of
%BOOTSTRAP-GUILE.
* guix/derivations.scm (imported-files)[parent-dirs]: Move to...
(parent-directories): ... here. New procedure.
(compiled-modules): New procedure.
(build-expression->derivation): Use it.
* tests/derivations.scm ("build-expression->derivation with modules"):
New test.
* guix/derivations.scm (%guile-for-build): Use `nixpkgs-derivation*'
instead of `nixpkgs-derivation'.
(build-expression->derivation): New `guile-for-build' keyword
parameter. Use it.
* guix/derivations.scm (write-derivation)[coalesce-duplicate-inputs]:
New procedure.
Use it to process INPUTS.
* tests/derivations.scm ("user of multiple-output derivation"): New
test.
