actions: use nix-eval-jobs for ci

1 files changed, 90 insertions, 0 deletions

diff --git a/.github/eval-flake.sh b/.github/eval-flake.sh
new file mode 100755
index 0000000..ceebcc9
--- /dev/null
+++ b/.github/eval-flake.sh
@@ -0,0 +1,90 @@
+#!/usr/bin/env bash
+set -euo pipefail
+### this is inspired by the ci script in [nixpkgs-unfree](https://github.com/numtide/nixpkgs-unfree)
+### link: https://github.com/numtide/nixpkgs-unfree/blob/127b9b18583de04c6207c2a0e674abf64fc4a3b1/ci.sh
+#
+## MIT License
+##
+## Copyright (c) 2022 Jonas Chevalier
+##
+## Permission is hereby granted, free of charge, to any person obtaining a copy
+## of this software and associated documentation files (the "Software"), to deal
+## in the Software without restriction, including without limitation the rights
+## to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+## copies of the Software, and to permit persons to whom the Software is
+## furnished to do so, subject to the following conditions:
+##
+## The above copyright notice and this permission notice shall be included in all
+## copies or substantial portions of the Software.
+##
+## THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+## IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+## FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+## AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+## LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+## OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+## SOFTWARE.
+
+function get_os() {
+    case "$1" in
+        "x86_64-linux") echo "ubuntu-latest" ;;
+        "x86_64-darwin") echo "macos-latest" ;;
+        "aarch64-linux") echo "ubuntu-latst" ;;
+    esac
+}
+
+args=(
+    --gc-roots-dir gc-roots
+    --check-cache-status
+    --force-recurse
+    --option allow-import-from-derivation true
+    --show-trace
+    --flake
+    '.#hydraJobs'
+)
+
+if [[ -n "${GITHUB_STEP_SUMMARY-}" ]]; then
+    log() {
+        echo "$*" >> "$GITHUB_STEP_SUMMARY"
+    }
+else
+    log() {
+        echo "$*"
+    }
+fi
+
+jobs=$(nix-eval-jobs "${args[@]}" | jq -r '. | @base64')
+jq -n '{"include": []}' > matrix.json
+
+had_error=0
+echo "$jobs" | while read -r job; do
+    job=$(echo "$job" | base64 -d)
+    attr=$(echo "$job" | jq -r .attr)
+    echo "## $attr"
+
+    error=$(echo "$job" | jq -r '.error')
+    if [[ $error == null ]]; then
+        log "### ✅ $attr"
+
+        system=$(echo "$job" | jq -r .system)
+        isCached=$(echo "$job" | jq -r .isCached)
+
+        jq ".include += [{\"attr\": \"$attr\", \"os\": \"$(get_os "$system")\", \"isCached\": $isCached}]" < matrix.json > matrix.json.tmp
+        mv matrix.json.tmp matrix.json
+    else
+        log "### ❌ $attr"
+        log
+        log "<details><summary>Evaluation error:</summary><pre>"
+        log "$error"
+        log "</pre></details>"
+        had_error=1
+    fi
+done
+
+if [[ $had_error -gt 0 ]]; then
+    rm matrix.json
+    exit 1
+fi
+
+echo "matrix=$(jq -r 'tostring' matrix.json)" >> "$GITHUB_OUTPUT"
+rm matrix.json