nixpkgs/pkgs/build-support/plugins.nix
Profpatsch 79dd4deda5 Ultrastar (#26524)
* ultrastardx-beta: init at 1.3.5

* libbass, libbass_fx: init at 24

* ultrastar-creator: init at 2017-04-12

* buildSupport/plugins.nix: add diffPlugins

Helper function to compare expected plugin lists to the found plugins.

* ultrastar-manager: init at 2017-05-24

The plugins are built in their own derivations, speeding up (re-)compilation.
The `diffPlugins` function from `beets` is reused to test for changes in the
plugin list on updates.

* beets: switch to diffPlugins

The function is basically just extracted for better reusability.
2017-06-14 11:29:31 +02:00

30 lines
977 B
Nix
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

{ stdenv }:
# helper functions for packaging programs with plugin systems
{
/* Takes a list of expected plugin names
* and compares it to the found plugins given in the file,
* one plugin per line.
* If the lists differ, the build fails with a nice message.
*
* This is helpful to ensure maintainers dont miss
* the addition or removal of a plugin.
*/
diffPlugins = expectedPlugins: foundPluginsFilePath: ''
# sort both lists first
plugins_expected=$(mktemp)
(${stdenv.lib.concatMapStrings (s: "echo \"${s}\";") expectedPlugins}) \
| sort -u > "$plugins_expected"
plugins_found=$(mktemp)
sort -u "${foundPluginsFilePath}" > "$plugins_found"
if ! mismatches="$(diff -y "$plugins_expected" "$plugins_found")"; then
echo "The the list of expected plugins (left side) doesn't match" \
"the list of plugins we found (right side):" >&2
echo "$mismatches" >&2
exit 1
fi
'';
}