ci: fix action cache

.gitea/workflows/npc-test.yml

@@ -16,11 +16,13 @@ jobs:
         id: cache-nix-develop
         uses: actions/cache@v4
         with:
-          path: /nix/store
+          path: |
+            /nix/store
+            /nix/var/nix/db
           key: nix-develop-${{ hashFiles('flake.*') }}
       - name: Fetch nix store
         if: steps.cache-nix-develop.outputs.cache-hit != 'true'
-        run: nix develop .#npc
+        run: nix develop .#npc --command true
       - name: Use develop environment
         uses: https://git.xinyang.life/xin/nix-develop@main
         with:
@@ -29,7 +31,11 @@ jobs:
         id: cache-sbt-dependency
         uses: actions/cache@v4
         with:
-          path: npc/core
+          path: |
+            npc/core
+            ~/.cache/coursier
+            ~/.ivy2/cache
+            ~/.sbt
           key: core-${{ hashFiles('npc/core/build.sbt') }}
       - name: Fetch sbt dependencies
         if: steps.cache-sbt-dependency.outputs.cache-hit != 'true'

flake.nix

@@ -49,6 +49,7 @@
             };
           };
         };
+
         packages.nemu = pkgs.callPackage ./nemu { am-kernels = self.packages.${system}.am-kernels; };
         packages.nemu-lib = pkgs.callPackage ./nemu { am-kernels = self.packages.${system}.am-kernels; defconfig = "riscv32-lib_defconfig"; };
         packages.abstract-machine = crossPkgs.callPackage ./abstract-machine { isa = "riscv"; platform = "nemu"; };