@@ -20,7 +20,30 @@ jobs:

     # The type of runner that the job will run on

     runs-on: ubuntu-latest

-    # Steps represent a sequence of tasks that will be executed as part of the job

+    ## attempt to cache nix store

+    - run: |

+        # Create with liberal rights, otherwise cache action will complain

+        # about permission errors.

+        sudo mkdir -p /nix/store

+        sudo chmod -R 777 /nix

+

+    - name: Cache nix env take N+1

+      uses: actions/cache@v2

+      with:

+        path: |

+          # See https://github.com/actions/cache/pull/726

+          /nix/store/**

+          # Missing something?

+          /nix/var/nix/*/*

+          /nix/var/nix/db/*

+          /nix/var/nix/db/*/**

+          !/nix/var/nix/daemon-socket/socket

+          !/nix/var/nix/userpool/*

+          !/nix/var/nix/gc.lock

+          !/nix/var/nix/db/big-lock

+          !/nix/var/nix/db/reserved

+        key: ${{ runner.os }}-nix-store

+

     steps:

       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it

       - uses: actions/checkout@v2