This fixes a bug whereby "guix build texlive -n" would report:
0.0 MB would be downloaded:
/gnu/store/…-texlive-20180414
instead of:
The following derivation would be built:
/gnu/store/…-texlive-texmf-20180414.drv
2,595.2 MB would be downloaded:
/gnu/store/…-texlive-20180414-texmf.tar.xz
/gnu/store/…-texlive-20180414
where 'texlive-texmf' is a non-substitutable dependency of 'texlive'.
* guix/derivations.scm (dependencies-of-substitutables): New procedure.
(derivation-build-plan): When 'input-substitutable-info' returns true,
append the subset of DEPS that corresponds to SUBSTITUABLES to the first
argument of 'loop'.
* guix/ui.scm (show-what-to-build): Remove half-baked traversal of
DOWNLOAD.
* tests/derivations.scm ("derivation-build-plan and substitutes,
non-substitutable dep"): New test.
This is a followup to 5cf4b26d52.
* guix/derivations.scm (substitution-oracle): Use
'derivation-input-derivation' instead of calling
'read-derivation-from-file'.
This is a followup to 5cf4b26d52.
* guix/derivations.scm (derivation-path->base16-hash): Rename to...
(derivation-base16-hash): ... this, and take a <derivation> rather than
a file name. Use 'mlambdaq' instead of 'mlambda'.
(derivation/masked-inputs): Adjust accordingly.
(invalidate-derivation-caches!): Likewise.
* guix/derivations.scm (build-derivations): Accept <derivation-input>
records among DERIVATIONS.
* tests/derivations.scm ("build-derivations with specific output"): Test
it.
Consequently, the whole graph of <derivation> object is readily
available without having to go through 'read-derivation-from-file',
which could have cache misses if the requested <derivation> object had
been GC'd in the meantime. This is an important property for the
performance of things like 'derivation-build-plan' that traverse the
derivation graph.
* guix/derivations.scm (<derivation-input>): Replace 'path' field by
'derivation'.
(derivation-input-path): Adjust accordingly.
(derivation-input-key): New procedure.
(derivation-input-output-paths): Adjust accordingly.
(coalesce-duplicate-inputs): Likewise.
(derivation-prerequisites): Use 'derivation-input-key' to compute keys
for INPUT-SET.
(derivation-build-plan): Likewise.
(read-derivation): Add optional 'read-derivation-from-file' parameter.
[make-input-drvs]: Call it.
(write-derivation)[write-input]: Adjust to new <derivation-input>.
(derivation/masked-inputs): Likewise, and remove redundant
'coalesce-duplicate-inputs' call.
(derivation)[input->derivation-input]: Change to consider only the
derivation case. Update call to 'make-derivation-input'.
[input->source]: New procedure.
Separate sources from inputs.
(map-derivation): Adjust to new <derivation-input>.
* tests/derivations.scm ("parse & export"): Pass a second argument to
'read-derivation'.
("build-expression->derivation and derivation-prerequisites")
("derivation-prerequisites and valid-derivation-input?"): Adjust to new
<derivation-input>.
The new 'derivation-build-plan' procedure has a more appropriate
signature: it takes a list of <derivation-inputs> instead of taking one
<derivation>. Its body is also much simpler.
* guix/derivations.scm (derivation-build-plan): New procedure.
(derivation-prerequisites-to-build): Express in terms of
'derivation-build-plan' and mark as deprecated.
* tests/derivations.scm: Change 'derivation-prerequisites-to-build'
tests to 'derivation-build-plan' and adjust accordingly.
This allows callers to request the substitution of a single derivation
output.
* guix/store.scm (build-things): Accept derivation/output pairs among
THINGS.
* guix/derivations.scm (build-derivations): Likewise.
* tests/store.scm ("substitute + build-things with specific output"):
New test.
* tests/derivations.scm ("build-derivations with specific output"):
New test.
* doc/guix.texi (The Store): Adjust accordingly.
On a profile with 280 packages, this reduces the number of
'valid-paths?' RPCs made by 'guix package -nu' from 6K to 500.
* guix/derivations.scm (derivation-prerequisites-to-build)[built?]:
Memoize 'valid-path?' calls.
This reduces max RSS from 1.3G to 1.0G.
* guix/derivations.scm (invalidate-derivation-caches!): New procedure.
* build-aux/hydra/gnu-system.scm (hydra-jobs): Use it. Add 'format'
call.
This has little or no run-time impact and slightly reduces the memory
footprint.
* guix/derivations.scm (derivation-hash): Replace 'mlambda' with
'lambda'.
This avoids the open/fstat/close syscalls upon a cache hit that we had
with the previous idiom:
(call-with-input-file file read-derivation)
where caching happened in 'read-derivation' itself.
* guix/derivations.scm (%read-derivation): Rename to...
(read-derivation): ... this.
(read-derivation-from-file): New procedure.
(derivation-prerequisites, substitution-oracle)
(derivation-prerequisites-to-build):
(derivation-path->output-path, derivation-path->output-paths):
(derivation-path->base16-hash, map-derivation): Use
'read-derivation-from-file' instead of (call-with-input-file …
read-derivation).
* guix/grafts.scm (item->deriver): Likewise.
* guix/scripts/build.scm (log-url, options->things-to-build): Likewise.
* guix/scripts/graph.scm (file->derivation): Remove.
(derivation-dependencies, %derivation-node-type): Use
'read-derivation-from-file' instead.
* guix/scripts/offload.scm (guix-offload): Likewise.
* guix/scripts/perform-download.scm (guix-perform-download): Likewise.
* guix/scripts/publish.scm (load-derivation): Remove.
(narinfo-string): Use 'read-derivation-from-file'.
* guix/derivations.scm (derivation-prerequisites-to-build): Rename
#:substitutable? to #:substitutable-info.
[derivation-substitutable?]: Rename to...
[derivation-substitutable-info]: ... this. Return a list of <substitutable>.
Second return value is now a list of <substitutable> instead of a list
of strings.
* guix/ui.scm (show-what-to-build)[substitutable?]: Rename to...
[substitutable-info]: ... this.
Adjust to new 'derivation-prerequisites-to-build' return value type.
* tests/derivations.scm ("derivation-prerequisites-to-build and
substitutes"): Adjust.
("derivation-prerequisites-to-build and substitutes, local build"):
Likewise.
* guix/derivations.scm (substitution-oracle): Use
'substitution-path-info' instead of 'substitution-paths'. Turn SUBST
into a vhash from path to <substitutable>. Change the returned
procedure to provide a <substitutable> instead of a Boolean.
* tests/derivations.scm ("substitution-oracle and #:substitute? #f"):
Mock 'substitutable-path-info' instead of 'substitutable-paths'.
Reported by Mark H Weaver <mhw@netris.org>
at <https://lists.gnu.org/archive/html/guix-devel/2017-04/msg00457.html>.
* guix/derivations.scm (build-expression->derivation): Use a string
output port for the expression. This reverts part of
2dce88d5bb.
* tests/derivations.scm ("build-expression->derivation and builder
encoding"): New test.
On Guile 2.2.1, this yields a 5% speedup on:
guix build libreoffice xmonad certbot -n --no-substitutes --no-build-hook
* guix/derivations.scm (derivation->string): Rename to...
(derivation->bytevector): ... this. Use 'open-bytevector-output-port'
instead of 'call-with-output-string'.
(derivation-hash): Remove string-to-bytevector conversion before
'sha256' call.
(build-expression->derivation): Use 'add-data-to-store' and an
bytevector port instead of a string port for the expression.
This avoids connections to substitute servers for derivations that are
not substitutable anyway, such as profiles.
Reported by Andy Wingo.
* guix/derivations.scm (substitution-oracle): Skip derivations that do
not pass 'substitutable-derivation?'.
* tests/derivations.scm ("substitution-oracle and #:substitute? #f"):
New test.
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.
* 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.
* 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.
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.
* 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.
Ludovic Courtès