From e523b1ce744badad8ad8ba97b484f4b86c90ae05 Mon Sep 17 00:00:00 2001
From: Lucille Hua <lucille.hua@gmail.com>
Date: Wed, 4 Oct 2023 17:50:55 -0400
Subject: [PATCH] Replace github cache action with restore and save (#24)

### What
Instead of letting `action/cache` do the restoring and saving cache for
us, we choose when to restore and when to save cache.

In this case, we will be saving cache immediately after the devbox
package installation, instead of waiting for the action post run. This
way, the `tar` sudo permission stays intact until the cache is saved.

More specifically, `action/cache/save` runs before the last step of
restoring `tar` to its original permission (as oppose to after)
---
 action.yml | 30 ++++++++++++++++++++++++++----
 1 file changed, 26 insertions(+), 4 deletions(-)

diff --git a/action.yml b/action.yml
index af75d74..d434891 100644
--- a/action.yml
+++ b/action.yml
@@ -53,10 +53,10 @@ runs:
     - name: Mount devbox cli cache
       if: inputs.refresh-cli == 'false'
       id: cache-devbox-cli
-      uses: actions/cache@v3
+      uses: actions/cache/restore@v3
       with:
         path: /usr/local/bin/devbox
-        key: ${{ runner.os }}-devbox-${{ env.latest_version }}
+        key: ${{ runner.os }}-devbox-cli-${{ env.latest_version }}
 
     - name: Install devbox cli
       if: steps.cache-devbox-cli.outputs.cache-hit != 'true'
@@ -94,6 +94,13 @@ runs:
         fi
         sudo mv "$DEVBOX_BINARY" /usr/local/bin/devbox
 
+    - name: Save devbox cli cache
+      if: inputs.refresh-cli == 'false' && steps.cache-devbox-cli.outputs.cache-hit != 'true'
+      uses: actions/cache/save@v3
+      with:
+        path: /usr/local/bin/devbox
+        key: ${{ runner.os }}-devbox-cli-${{ env.latest_version }}
+
     - name: Workaround nix store cache permission issue
       if: inputs.enable-cache == 'true'
       shell: bash
@@ -126,8 +133,9 @@ runs:
         extra-conf: experimental-features = ca-derivations fetch-closure
 
     - name: Mount nix store cache
+      id: cache-devbox-nix-store
       if: inputs.enable-cache == 'true'
-      uses: actions/cache@v3
+      uses: actions/cache/restore@v3
       with:
         path: |
           ~/.cache/devbox
@@ -137,13 +145,27 @@ runs:
           ~/.nix-profile
           /nix/store
           /nix/var/nix
-        key: ${{ runner.os }}-devbox-${{ hashFiles(format('{0}/devbox.lock', inputs.project-path)) }}
+        key: ${{ runner.os }}-devbox-nix-store-${{ hashFiles(format('{0}/devbox.lock', inputs.project-path)) }}
 
     - name: Install devbox packages
       shell: bash
       run: |
         devbox run --config=${{ inputs.project-path }} -- echo "Packages installed!"
 
+    - name: Save nix store cache
+      if: inputs.enable-cache == 'true' && steps.cache-devbox-nix-store.outputs.cache-hit != 'true'
+      uses: actions/cache/save@v3
+      with:
+        path: |
+          ~/.cache/devbox
+          ~/.cache/nix
+          ~/.local/state/nix
+          ~/.nix-defexpr
+          ~/.nix-profile
+          /nix/store
+          /nix/var/nix
+        key: ${{ runner.os }}-devbox-nix-store-${{ hashFiles(format('{0}/devbox.lock', inputs.project-path)) }}
+
     - name: Restore tar command
       if: inputs.enable-cache == 'true'
       shell: bash