guix/tests
Maxime Devos 5378edeab4
utils: Define ‘search-input-file’ procedure.
The procedure ‘which’ from (guix build utils)
is used for two different purposes:

  1. for finding the absolute file name of a binary
     that needs to run during the build process

  2. for finding the absolute file name of a binary,
     for the target system (as in --target=TARGET),
     e.g. for substituting sh->/gnu/store/.../bin/sh,
     python->/gnu/store/.../bin/python.

When compiling natively (target=#f in Guix parlance),
this is perfectly fine.

However, when cross-compiling, there is a problem.
"which" looks in $PATH for binaries.  That's good for purpose (1),
but incorrect for (2), as the $PATH contains binaries from native-inputs
instead of inputs.

This commit defines a ‘search-input-file’ procedure. It functions
like 'which', but instead of searching in $PATH, it searches in
the 'inputs' of the build phase, which must be passed to
‘search-input-file’ as an argument. Also, the file name must
include "bin/" or "sbin/" as appropriate.

* guix/build/utils.scm (search-input-file): New procedure.
* tests/build-utils.scm
  ("search-input-file: exception if not found")
  ("search-input-file: can find if existent"): Test it.
* doc/guix.texi (File Search): Document it.

Partially-Fixes: <https://issues.guix.gnu.org/47869>
Co-Authored-By: Ludovic Courtès <ludo@gnu.org>
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
2021-06-04 22:34:26 +02:00
..
services
accounts.scm
base16.scm
base32.scm
base64.scm
boot-parameters.scm
bournish.scm
build-utils.scm utils: Define ‘search-input-file’ procedure. 2021-06-04 22:34:26 +02:00
builders.scm
cache.scm
challenge.scm
channels.scm
civodul.key
combinators.scm
containers.scm
cpan.scm
cpio.scm
cran.scm
crate.scm
cve-sample.json
cve.scm
debug-link.scm
derivations.scm
discovery.scm
dsa.key
ed25519.key
ed25519.sec
ed25519bis.key
ed25519bis.sec
elpa.scm
file-systems.scm
gem.scm
gexp.scm
git-authenticate.scm
git.scm
glob.scm
gnu-maintenance.scm
go.scm
grafts.scm
graph.scm
gremlin.scm
guix-archive.sh
guix-authenticate.sh
guix-build-branch.sh
guix-build.sh
guix-daemon.sh
guix-describe.sh
guix-download.sh
guix-environment-container.sh
guix-environment.sh
guix-gc.sh
guix-git-authenticate.sh
guix-graph.sh
guix-hash.sh
guix-lint.sh
guix-pack-localstatedir.sh
guix-pack-relocatable.sh
guix-pack.sh
guix-package-aliases.sh
guix-package-net.sh
guix-package.sh
guix-repl.sh
guix-system.sh
hackage.scm
import-utils.scm
inferior.scm
ipfs.scm
lint.scm
modules.scm
monads.scm
nar.scm
networking.scm
offload.scm
opam.scm
openpgp.scm
pack.scm
packages.scm
pki.scm
print.scm
processes.scm
profiles.scm
publish.scm
pypi.scm
records.scm
rsa.key
scripts.scm
search-paths.scm
services.scm
sets.scm
signing-key.pub
signing-key.sec
size.scm
status.scm
store-database.scm
store-deduplication.scm
store-roots.scm
store.scm
substitute.scm
swh.scm
syscalls.scm
system.scm
test.drv
texlive.scm
transformations.scm
ui.scm
union.scm
upstream.scm
utils.scm
uuid.scm
workers.scm