Fix Ubuntu OpenJPEG provisioning (#113)

.gitea/workflows/imaging-meshing.yml

@@ -21,6 +21,7 @@ on:
       - "tests/compat/tests/imaging_meshing_semantics.rs"
       - "tests/upstream-tests.json"
       - "tools/check_milestone_06.py"
+      - "tools/install_openjpeg_2_5_4.sh"
   pull_request:
     paths:
       - ".gitea/workflows/imaging-meshing.yml"
@@ -41,6 +42,7 @@ on:
       - "tests/compat/tests/imaging_meshing_semantics.rs"
       - "tests/upstream-tests.json"
       - "tools/check_milestone_06.py"
+      - "tools/install_openjpeg_2_5_4.sh"
   workflow_dispatch:
 
 jobs:
@@ -48,6 +50,9 @@ jobs:
     runs-on: ubuntu-latest
     env:
       RUSTDOCFLAGS: -D warnings
+      OPENJPEG_PREFIX: /tmp/metacrate-openjpeg-${{ github.run_id }}
+      PKG_CONFIG_PATH: /tmp/metacrate-openjpeg-${{ github.run_id }}/lib/pkgconfig
+      LD_LIBRARY_PATH: /tmp/metacrate-openjpeg-${{ github.run_id }}/lib
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -56,6 +61,11 @@ jobs:
       - uses: dtolnay/rust-toolchain@stable
         with:
           components: clippy,rustfmt
+      - name: Install audited OpenJPEG 2.5.4
+        run: |
+          sudo apt-get update
+          sudo apt-get install --yes build-essential cmake pkg-config
+          tools/install_openjpeg_2_5_4.sh "$OPENJPEG_PREFIX"
       - name: Audit milestone ownership and feature isolation
         run: python tools/check_milestone_06.py
       - name: Test native imaging and meshing crates