mir: Fix tests

[OPNA2608]

Description of changes

Hangs due to missing gobject-introspection: https://hydra.nixos.org/build/258221353

Tested by building: mir, miriway.passthru.tests, lomiri.qtmir, lomiri.lomiri.passthru.tests

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 24.05 Release Notes (or backporting 23.05 and 23.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

---

Add a 👍 reaction to pull requests you find important.

[wineee]

2 version mismatches:
❌ pkg-config module miral exists and has version 4.0.0 when 2.15.0 was expected
❌ pkg-config module miroil exists and has version 3.0.0 when 2.15.0 was expected
https://logs.ofborg.org/?key=nixos/nixpkgs.310091&attempt_id=f267fb0c-d7cf-4beb-b2bd-1a22e34654bd

(though it is not the responsibility of this pr）

[OPNA2608]

MirAL & MirOil use separate versions, they're not supposed to match the main one. Unfortunately, the option to opt out of this version check seems broken. 🙁

#307770, CC @nbraud

nixpkgs/pkgs/build-support/testers/hasPkgConfigModules/tester.nix

Lines 58 to 60 in 4f554f0

	if [[ $notFound -eq 0 ]] && ([[ $versionMismatch -eq 0 ]] || [[ "$versionCheck" == false ]]); then
	exit 0
	fi

If one opts into making this a fatal mismatch with versionCheck = true, then $versionCheck == 1. Otherwise (which is the default), $versionCheck is empty. So this check never works correctly AFAICT, and it's always enforced.

Tested by adding

echo "versionCheck is: $versionCheck"

right before the if.

versionCheck = true: versionCheck is: 1
versionCheck = false: versionCheck is:

[wineee]

mir.passthru.tests can be fixed later

[nbraud]

The pkg-config test should be fixed once either #310535 or #311069 are merged. Sorry for the breakage 😓