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{ lib
, callPackage
, runCommand
, makeWrapper
, wrapGAppsHook
, buildDartApplication
, cacert
, glib
, flutter
, pkg-config
, jq
, yq
, moreutils
}:
# absolutely no mac support for now
{ pubGetScript ? "flutter pub get"
, flutterBuildFlags ? [ ]
, extraWrapProgramArgs ? ""
, ...
}@args:
(buildDartApplication.override {
dart = flutter;
}) (args // {
sdkSetupScript = ''
# Pub needs SSL certificates. Dart normally looks in a hardcoded path.
# https://github.com/dart-lang/sdk/blob/3.1.0/runtime/bin/security_context_linux.cc#L48
#
# Dart does not respect SSL_CERT_FILE...
# https://github.com/dart-lang/sdk/issues/48506
# ...and Flutter does not support --root-certs-file, so the path cannot be manually set.
# https://github.com/flutter/flutter/issues/56607
# https://github.com/flutter/flutter/issues/113594
#
# libredirect is of no use either, as Flutter does not pass any
# environment variables (including LD_PRELOAD) to the Pub process.
#
# Instead, Flutter is patched to allow the path to the Dart binary used for
# Pub commands to be overriden.
export NIX_FLUTTER_PUB_DART="${runCommand "dart-with-certs" { nativeBuildInputs = [ makeWrapper ]; } ''
mkdir -p "$out/bin"
makeWrapper ${flutter.dart}/bin/dart "$out/bin/dart" \
--add-flags "--root-certs-file=${cacert}/etc/ssl/certs/ca-bundle.crt"
''}/bin/dart"
export HOME="$NIX_BUILD_TOP"
flutter config --no-analytics &>/dev/null # mute first-run
flutter config --enable-linux-desktop >/dev/null
'';
inherit pubGetScript;
sdkSourceBuilders = {
# https://github.com/dart-lang/pub/blob/68dc2f547d0a264955c1fa551fa0a0e158046494/lib/src/sdk/flutter.dart#L81
"flutter" = name: runCommand "flutter-sdk-${name}" { passthru.packageRoot = "."; } ''
for path in '${flutter}/packages/${name}' '${flutter}/bin/cache/pkg/${name}'; do
if [ -d "$path" ]; then
ln -s "$path" "$out"
break
fi
done
if [ ! -e "$out" ]; then
echo 1>&2 'The Flutter SDK does not contain the requested package: ${name}!'
exit 1
fi
'';
};
extraPackageConfigSetup = ''
# https://github.com/flutter/flutter/blob/3.13.8/packages/flutter_tools/lib/src/dart/pub.dart#L755
if [ "$('${yq}/bin/yq' '.flutter.generate // false' pubspec.yaml)" = "true" ]; then
'${jq}/bin/jq' '.packages |= . + [{
name: "flutter_gen",
rootUri: "flutter_gen",
languageVersion: "2.12",
}]' "$out" | '${moreutils}/bin/sponge' "$out"
fi
'';
nativeBuildInputs = (args.nativeBuildInputs or [ ]) ++ [
wrapGAppsHook
# Flutter requires pkg-config for Linux desktop support, and many plugins
# attempt to use it.
#
# It is available to the `flutter` tool through its wrapper, but it must be
# added here as well so the setup hook adds plugin dependencies to the
# pkg-config search paths.
pkg-config
];
buildInputs = (args.buildInputs or [ ]) ++ [ glib ];
dontDartBuild = true;
buildPhase = args.buildPhase or ''
runHook preBuild
mkdir -p build/flutter_assets/fonts
flutter build linux -v --release --split-debug-info="$debug" ${builtins.concatStringsSep " " (map (flag: "\"${flag}\"") flutterBuildFlags)}
runHook postBuild
'';
dontDartInstall = true;
installPhase = args.installPhase or ''
runHook preInstall
built=build/linux/*/release/bundle
mkdir -p $out/bin
mv $built $out/app
for f in $(find $out/app -iname "*.desktop" -type f); do
install -D $f $out/share/applications/$(basename $f)
done
for f in $(find $out/app -maxdepth 1 -type f); do
ln -s $f $out/bin/$(basename $f)
done
# make *.so executable
find $out/app -iname "*.so" -type f -exec chmod +x {} +
# remove stuff like /build/source/packages/ubuntu_desktop_installer/linux/flutter/ephemeral
for f in $(find $out/app -executable -type f); do
if patchelf --print-rpath "$f" | grep /build; then # this ignores static libs (e,g. libapp.so) also
echo "strip RPath of $f"
newrp=$(patchelf --print-rpath $f | sed -r "s|/build.*ephemeral:||g" | sed -r "s|/build.*profile:||g")
patchelf --set-rpath "$newrp" "$f"
fi
done
# Install the package_config.json file.
# This is normally done by dartInstallHook, but we disable it.
mkdir -p "$pubcache"
cp .dart_tool/package_config.json "$pubcache/package_config.json"
runHook postInstall
'';
dontWrapGApps = true;
extraWrapProgramArgs = ''
''${gappsWrapperArgs[@]} \
${extraWrapProgramArgs}
'';
})
|