ci: Symlink gir directory to ourselves to find generator.py
`generator.py` moved into this repository, and gtk-rs (and friends) now
symlink to `gir/generator.py`.  We could simply call `../generator.py`
instead, but this make sure the symlink is actually valid.
@@ -168,6 +168,10 @@ jobs:
ref: master
path: gtk-rs
if: matrix.os == 'ubuntu-20.04'
+ - name: "Symlink `gir` in GTK"
+ run: |
+ rmdir gtk-rs/gir
+ ln -sf .. gtk-rs/gir
- name: "Attempt to rebuild GTK gir"
run: cd gtk-rs && python3 generator.py --no-fmt --gir-path ../target/release/gir --gir-files-directories ../tests/gir-files/ && rm ../Cargo.* && cargo build
if: matrix.os == 'ubuntu-20.04'
