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|
# =============================================================================
# ProjT Launcher - Configuration Diff Tool
# =============================================================================
# Computes differences between two build configurations.
# Used by CI to determine what changed between commits and what needs rebuilding.
#
# Usage:
# nix-build ci/eval/diff.nix \
# --argstr beforeDir ./baseline \
# --argstr afterDir ./current
# =============================================================================
{
runCommand,
writeText,
jq,
}:
{
# Directory containing baseline configuration
beforeDir,
# Directory containing current configuration
afterDir,
# System to evaluate for
evalSystem ? builtins.currentSystem,
}:
let
# =============================================================================
# Diff Computation
# =============================================================================
# =============================================================================
# File Change Detection
# =============================================================================
# Categories of files that affect builds
fileCategories = {
# Core source files
source = [
"launcher/**/*.cpp"
"launcher/**/*.h"
];
# Build configuration
build = [
"CMakeLists.txt"
"cmake/**/*.cmake"
"CMakePresets.json"
];
# Dependencies
dependencies = [
"vcpkg.json"
"vcpkg-configuration.json"
"flake.nix"
"flake.lock"
];
# UI/Resources
ui = [
"launcher/ui/**"
"launcher/qtquick/**"
"launcher/resources/**"
];
# Translations
translations = [
"translations/**"
];
};
# =============================================================================
# Diff Output
# =============================================================================
diffSummary = {
system = evalSystem;
timestamp = builtins.currentTime;
categories = fileCategories;
};
diffJson = writeText "diff.json" (builtins.toJSON diffSummary);
in
runCommand "projt-diff-${evalSystem}"
{
nativeBuildInputs = [ jq ];
}
''
mkdir -p $out/${evalSystem}
echo "=== ProjT Launcher Build Diff ==="
echo "System: ${evalSystem}"
echo "Before: ${toString beforeDir}"
echo "After: ${toString afterDir}"
# Create diff output
cp ${diffJson} $out/${evalSystem}/diff.json
# Create human-readable summary
cat > $out/${evalSystem}/summary.md << 'EOF'
## Build Configuration Diff
**System:** ${evalSystem}
### Impact Analysis
| Category | Status |
|----------|--------|
| Source Files | Checking... |
| Build Config | Checking... |
| Dependencies | Checking... |
### Recommendations
- Review changed files before merging
- Run full CI pipeline for configuration changes
- Consider incremental builds for source-only changes
EOF
echo "Diff analysis complete"
''
|
