ci: Share cache between loadtest and other tests

This puts all those development tools that depend on the dynamically linked postgrestPackage
into a single cache group. Notably this now includes the loadtest, but does not include the
style/lint job anymore.

This also improves the creation of cache keys and their restore prefixes. The cache key
now depends on default.nix and shell.nix in the root folder and all .patch files in the
nix folder. Those may change the output of our nix derivations, so must be included. At
the same time, there is no reason to include the actions/setup-nix folder. This would
only lead to new caches being created every time we update one of the depndent actions
in this file. Finally, restoring caches from a different toolset makes zero sense, so
we remove that again. There is no point in having the style job fall back to the static
cache for example.

.github/actions/setup-nix/action.yaml

@@ -5,26 +5,24 @@ description: Installs nix, sets up cachix and installs a subset of tooling.
 inputs:
  authToken:
  description: Token to pass to cachix
+ cache:
+ description: Cache id to use for cache-nix-action
  tools:
  description: Tools to install with nix-env -iA <tools>
- cache-id:
- description: Cache id to use for cache-nix-action
- default: "default"
 
 runs:
  using: composite
  steps:
  - uses: nixbuild/nix-quick-install-action@v26
  with:
  nix_version: '2.13.6'
- - name: Restore and cache Nix store
+ - name: Restore and save /nix/store cache
+ if: ${{ inputs.cache }}
  uses: nix-community/[email protected]
  with:
- key: cache-nix-${{ runner.os }}-id-${{ inputs.cache-id }}-${{ hashFiles('nix/**/*.nix', '.github/actions/setup-nix/*') }}
+ key: cache-nix-${{ runner.os }}-${{ inputs.cache }}-${{ hashFiles('**/*.nix', 'nix/**/*.patch') }}
  restore-keys: |
- cache-nix-${{ runner.os }}-id-${{ inputs.cache-id }}-
- cache-nix-${{ runner.os }}-id-common-
- cache-nix-${{ runner.os }}-
+ cache-nix-${{ runner.os }}-${{ inputs.cache }}-
  - uses: cachix/cachix-action@v14
  with:
  name: postgrest

.github/workflows/ci.yaml

@@ -19,16 +19,16 @@ concurrency:
 
 jobs:
  Prepopulate-Nix-Cache-Linux:
- name: Prepopulate Nix cache for Linux runners
+ name: Prepopulate Nix "test" cache for Linux runners
  runs-on: ubuntu-latest
  steps:
  - uses: actions/checkout@v4
  - name: Setup Nix Environment
  uses: ./.github/actions/setup-nix
  with:
  authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
- cache-id: common
- tools: style withTools memory tests release postgrestPackage
+ cache: test
+ tools: loadtest memory postgrestPackage tests withTools
 
  Lint-Style:
  name: Lint & check code style
@@ -40,8 +40,8 @@ jobs:
  uses: ./.github/actions/setup-nix
  with:
  authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+ cache: style
  tools: style
- cache-id: common
  - name: Run linter (check locally with `nix-shell --run postgrest-lint`)
  run: postgrest-lint
  - name: Run style check (auto-format with `nix-shell --run postgrest-style`)
@@ -63,8 +63,8 @@ jobs:
  uses: ./.github/actions/setup-nix
  with:
  authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+ cache: test
  tools: tests
- cache-id: common
 
  - name: Run coverage (IO tests and Spec tests against PostgreSQL 15)
  run: postgrest-coverage
@@ -101,8 +101,8 @@ jobs:
  uses: ./.github/actions/setup-nix
  with:
  authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+ cache: test
  tools: tests withTools
- cache-id: common 
 
  - name: Run spec tests
  if: always()
@@ -123,8 +123,8 @@ jobs:
  uses: ./.github/actions/setup-nix
  with:
  authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+ cache: test
  tools: memory
- cache-id: common
  - name: Run memory tests
  run: postgrest-test-memory
 
@@ -139,8 +139,8 @@ jobs:
  - name: Setup Nix Environment
  uses: ./.github/actions/setup-nix
  with:
+ cache: test
  tools: loadtest
- cache-id: test-loadtest
  - uses: actions-ecosystem/action-get-latest-tag@v1
  id: get-latest-tag
  with:
@@ -166,6 +166,7 @@ jobs:
  uses: ./.github/actions/setup-nix
  with:
  authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+ cache: static
 
  - name: Build static executable
  run: nix-build -A postgrestStatic
@@ -194,6 +195,7 @@ jobs:
  uses: ./.github/actions/setup-nix
  with:
  authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+ cache: all
 
  - name: Build everything
  run: |
@@ -503,11 +505,13 @@ jobs:
  ISPRERELEASE: ${{ needs.Prepare-Release.outputs.isprerelease }}
  steps:
  - uses: actions/checkout@v4
- - name: Setup Nix Environment
- uses: ./.github/actions/setup-nix
- with:
- authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
- tools: release
+# Only used for dockerhub description?
+# - name: Setup Nix Environment
+# uses: ./.github/actions/setup-nix
+# with:
+# authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+# cache: release
+# tools: release
  - name: Download Docker image
  uses: actions/download-artifact@v4
  with: