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authorctucx <c@ctu.cx>2020-04-23 21:26:34 +0200
committerctucx <c@ctu.cx>2020-04-23 21:26:34 +0200
commitc1732ebb455b591a7c77deefc77cb9798a04aeed (patch)
treeaa6e4611786ed3114f0501f6aaef8c19e9b0313b /composer-env.nix
parent97f3070fbae6baba92bfe22b065f2a6796fd3e52 (diff)
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+# This file originates from composer2nix
+
+{ stdenv, writeTextFile, fetchurl, php, unzip, phpPackages }:
+
+let
+ inherit (phpPackages) composer;
+ buildZipPackage = { name, src }:
+ stdenv.mkDerivation {
+ inherit name src;
+ buildInputs = [ unzip ];
+ buildCommand = ''
+ unzip $src
+ baseDir=$(find . -type d -mindepth 1 -maxdepth 1)
+ cd $baseDir
+ mkdir -p $out
+ mv * $out
+ '';
+ };
+
+ buildPackage =
+ { name
+ , src
+ , packages ? {}
+ , devPackages ? {}
+ , buildInputs ? []
+ , symlinkDependencies ? false
+ , executable ? false
+ , removeComposerArtifacts ? false
+ , postInstall ? ""
+ , noDev ? false
+ , unpackPhase ? "true"
+ , buildPhase ? "true"
+ , ...}@args:
+
+ let
+ reconstructInstalled = writeTextFile {
+ name = "reconstructinstalled.php";
+ executable = true;
+ text = ''
+ #! ${php}/bin/php
+ <?php
+ if(file_exists($argv[1]))
+ {
+ $composerLockStr = file_get_contents($argv[1]);
+
+ if($composerLockStr === false)
+ {
+ fwrite(STDERR, "Cannot open composer.lock contents\n");
+ exit(1);
+ }
+ else
+ {
+ $config = json_decode($composerLockStr, true);
+
+ if(array_key_exists("packages", $config))
+ $allPackages = $config["packages"];
+ else
+ $allPackages = array();
+
+ ${stdenv.lib.optionalString (!noDev) ''
+ if(array_key_exists("packages-dev", $config))
+ $allPackages = array_merge($allPackages, $config["packages-dev"]);
+ ''}
+
+ $packagesStr = json_encode($allPackages, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
+ print($packagesStr);
+ }
+ }
+ else
+ print("[]");
+ ?>
+ '';
+ };
+
+ constructBin = writeTextFile {
+ name = "constructbin.php";
+ executable = true;
+ text = ''
+ #! ${php}/bin/php
+ <?php
+ $composerJSONStr = file_get_contents($argv[1]);
+
+ if($composerJSONStr === false)
+ {
+ fwrite(STDERR, "Cannot open composer.json contents\n");
+ exit(1);
+ }
+ else
+ {
+ $config = json_decode($composerJSONStr, true);
+
+ if(array_key_exists("bin-dir", $config))
+ $binDir = $config["bin-dir"];
+ else
+ $binDir = "bin";
+
+ if(array_key_exists("bin", $config))
+ {
+ if(!file_exists("vendor/".$binDir))
+ mkdir("vendor/".$binDir);
+
+ foreach($config["bin"] as $bin)
+ symlink("../../".$bin, "vendor/".$binDir."/".basename($bin));
+ }
+ }
+ ?>
+ '';
+ };
+
+ bundleDependencies = dependencies:
+ stdenv.lib.concatMapStrings (dependencyName:
+ let
+ dependency = dependencies.${dependencyName};
+ in
+ ''
+ ${if dependency.targetDir == "" then ''
+ vendorDir="$(dirname ${dependencyName})"
+ mkdir -p "$vendorDir"
+ ${if symlinkDependencies then
+ ''ln -s "${dependency.src}" "$vendorDir/$(basename "${dependencyName}")"''
+ else
+ ''cp -av "${dependency.src}" "$vendorDir/$(basename "${dependencyName}")"''
+ }
+ '' else ''
+ namespaceDir="${dependencyName}/$(dirname "${dependency.targetDir}")"
+ mkdir -p "$namespaceDir"
+ ${if symlinkDependencies then
+ ''ln -s "${dependency.src}" "$namespaceDir/$(basename "${dependency.targetDir}")"''
+ else
+ ''cp -av "${dependency.src}" "$namespaceDir/$(basename "${dependency.targetDir}")"''
+ }
+ ''}
+ '') (builtins.attrNames dependencies);
+
+ extraArgs = removeAttrs args [ "name" "packages" "devPackages" "buildInputs" ];
+ in
+ stdenv.mkDerivation ({
+ name = "composer-${name}";
+ buildInputs = [ php composer ] ++ buildInputs;
+
+ inherit unpackPhase buildPhase;
+
+ installPhase = ''
+ ${if executable then ''
+ mkdir -p $out/share/php
+ cp -av $src $out/share/php/$name
+ chmod -R u+w $out/share/php/$name
+ cd $out/share/php/$name
+ '' else ''
+ cp -av $src $out
+ chmod -R u+w $out
+ cd $out
+ ''}
+
+ # Remove unwanted files
+ rm -f *.nix
+
+ export HOME=$TMPDIR
+
+ # Remove the provided vendor folder if it exists
+ rm -Rf vendor
+
+ # If there is no composer.lock file, compose a dummy file.
+ # Otherwise, composer attempts to download the package.json file from
+ # the registry which we do not want.
+ if [ ! -f composer.lock ]
+ then
+ cat > composer.lock <<EOF
+ {
+ "packages": []
+ }
+ EOF
+ fi
+
+ # Reconstruct the installed.json file from the lock file
+ mkdir -p vendor/composer
+ ${reconstructInstalled} composer.lock > vendor/composer/installed.json
+
+ # Copy or symlink the provided dependencies
+ cd vendor
+ ${bundleDependencies packages}
+ ${stdenv.lib.optionalString (!noDev) (bundleDependencies devPackages)}
+ cd ..
+
+ # Reconstruct autoload scripts
+ # We use the optimize feature because Nix packages cannot change after they have been built
+ # Using the dynamic loader for a Nix package is useless since there is nothing to dynamically reload.
+ composer dump-autoload --optimize ${stdenv.lib.optionalString noDev "--no-dev"}
+
+ # Run the install step as a validation to confirm that everything works out as expected
+ composer install --optimize-autoloader ${stdenv.lib.optionalString noDev "--no-dev"}
+
+ ${stdenv.lib.optionalString executable ''
+ # Reconstruct the bin/ folder if we deploy an executable project
+ ${constructBin} composer.json
+ ln -s $(pwd)/vendor/bin $out/bin
+ ''}
+
+ ${stdenv.lib.optionalString (!symlinkDependencies) ''
+ # Patch the shebangs if possible
+ if [ -d $(pwd)/vendor/bin ]
+ then
+ # Look for all executables in bin/
+ for i in $(pwd)/vendor/bin/*
+ do
+ # Look for their location
+ realFile=$(readlink -f "$i")
+
+ # Restore write permissions
+ chmod u+wx "$(dirname "$realFile")"
+ chmod u+w "$realFile"
+
+ # Patch shebang
+ sed -e "s|#!/usr/bin/php|#!${php}/bin/php|" \
+ -e "s|#!/usr/bin/env php|#!${php}/bin/php|" \
+ "$realFile" > tmp
+ mv tmp "$realFile"
+ chmod u+x "$realFile"
+ done
+ fi
+ ''}
+
+ if [ "$removeComposerArtifacts" = "1" ]
+ then
+ # Remove composer stuff
+ rm -f composer.json composer.lock
+ fi
+
+ # Execute post install hook
+ runHook postInstall
+ '';
+ } // extraArgs);
+in
+{
+ composer = stdenv.lib.makeOverridable composer;
+ buildZipPackage = stdenv.lib.makeOverridable buildZipPackage;
+ buildPackage = stdenv.lib.makeOverridable buildPackage;
+}