From 300701eca5c49beb6782d5f729ed135a3cd96298 Mon Sep 17 00:00:00 2001
From: Niklas Dewally <nd60@st-andrews.ac.uk>
Date: Sat, 4 Nov 2023 09:50:23 +0000
Subject: [PATCH] CI: generate full cache on main

---
 .github/workflows/doc-coverage.yml  |  2 +-
 .github/workflows/update-caches.yml | 60 +++++++++++++++++++++++++++++
 etc/ci/genindex.py                  |  1 +
 3 files changed, 62 insertions(+), 1 deletion(-)
 create mode 100644 .github/workflows/update-caches.yml

diff --git a/.github/workflows/doc-coverage.yml b/.github/workflows/doc-coverage.yml
index 92eade5d7d..d12c54cd2e 100644
--- a/.github/workflows/doc-coverage.yml
+++ b/.github/workflows/doc-coverage.yml
@@ -102,7 +102,7 @@ jobs:
             solvers/minion/vendor
 
           key: nightly-${{ runner.os }}-gitmodules-${{ steps.cache-vars.outputs.submodule_sha }}-cargo-${{ hashFiles('**/Cargo.lock') }}
-          restore-keys: nightly-${{ runner.os }}-gitmodules-
+          restore-keys: nightly-${{ runner.os }}
 
       - name: Use nightly 
         run: rustup update nightly && rustup default nightly
diff --git a/.github/workflows/update-caches.yml b/.github/workflows/update-caches.yml
new file mode 100644
index 0000000000..44526fa5c1
--- /dev/null
+++ b/.github/workflows/update-caches.yml
@@ -0,0 +1,60 @@
+name: Full Caches
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  caches:
+    strategy:
+      matrix:
+        version: [nightly,stable]
+        os: [ubuntu-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
+    name: "Regenerate Caches ($${{ matrix.version }}, ${{ runner.os }}" 
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v2
+
+      - name: Generate caching variables
+        id: cache-vars
+        run: |
+          echo -e "submodule_sha=$(./etc/ci/get_submodules_hash.sh)" >> "$GITHUB_OUTPUT"
+          echo -e "submodule_sha=$(./etc/ci/get_submodules_hash.sh)"
+
+      - name: Set up cache
+        uses: actions/cache/restore@v3
+        with:
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/
+            ~/.cargo/git/
+            target/            
+            solvers/minion/vendor
+            solvers/chuffed/vendor
+
+          key: ${{ matrix.version }}-${{ runner.os }}-gitmodules-${{ steps.cache-vars.outputs.submodule_sha }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: ${{ matrix.version }}-${{ runner.os }}
+
+      - name: Install rust ${{ matrix.version }}
+        run: rustup update ${{ matrix.version }} && rustup default ${{ matrix.version }}
+
+      - run : cargo build --workspace
+
+      - name: Delete cache if it already exists, so we can overwrite it
+      - run: | 
+          gh cache delete "${{ matrix.version }}-${{ runner.os }}-gitmodules-${{ steps.cache-vars.outputs.submodule_sha }}-cargo-${{ hashFiles('**/Cargo.lock') }}"
+          # always succeed even if cache does not exist
+          true
+
+      - name: Save cache
+        uses: actions/cache/save@v3
+        with:
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/
+            ~/.cargo/git/
+            target/            
+            solvers/minion/vendor
+            solvers/chuffed/vendor
+        key: ${{ matrix.version }}-${{ runner.os }}-gitmodules-${{ steps.cache-vars.outputs.submodule_sha }}-cargo-${{ hashFiles('**/Cargo.lock') }}
diff --git a/etc/ci/genindex.py b/etc/ci/genindex.py
index 12c591dee4..501929fe78 100755
--- a/etc/ci/genindex.py
+++ b/etc/ci/genindex.py
@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 # ---
+# 
 # Copyright 2023 glowinthedark
 #
 # Licensed under the Apache License, Version 2.0 (the "License");