30 lines
967 B
Nix
30 lines
967 B
Nix
{ lib }:
|
||
# 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 don’t miss
|
||
* the addition or removal of a plugin.
|
||
*/
|
||
diffPlugins = expectedPlugins: foundPluginsFilePath: ''
|
||
# sort both lists first
|
||
plugins_expected=$(mktemp)
|
||
(${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
|
||
'';
|
||
|
||
}
|