Hopefully fix mac ci builds.

Author: robinheghan

.github/workflows/build.yml

@@ -137,6 +137,12 @@ jobs:
           path: ~/.cache
           key: cache-${{ matrix.os }}-${{ hashFiles('devbox.lock', 'cabal.project.freeze') }}
 
+      - name: Cache cabal state
+        uses: actions/cache@v4
+        with:
+          path: ~/.cabal
+          key: state-${{ matrix.os }}-${{ hashFiles('devbox.lock', 'cabal.project.freeze') }}
+
       - name: Cache build artifacts
         uses: actions/cache@v4
         with:
@@ -154,7 +160,7 @@ jobs:
         run: devbox run -- npm install
 
       - name: Configure
-        run: devbox run -- cabal configure --enable-tests -O2
+        run: XDG_STATE_HOME=~/.cabal devbox run -- cabal configure --enable-tests -O2
 
       - name: Build
         run: devbox run -- cabal build