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nixpkgs/pkgs/build-support/flutter/default.nix

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Nix

{ flutter
, lib
, llvmPackages_13
, cmake
, ninja
, pkg-config
, wrapGAppsHook
, autoPatchelfHook
, util-linux
, libselinux
, libsepol
, libthai
, libdatrie
, libxkbcommon
, at-spi2-core
, libsecret
, jsoncpp
, xorg
, dbus
, gtk3
, glib
, pcre
, libepoxy
, stdenvNoCC
, cacert
, git
, dart
, nukeReferences
, bash
, curl
, unzip
, which
, xz
}:
# absolutely no mac support for now
args:
let
pl = n: "##FLUTTER_${n}_PLACEHOLDER_MARKER##";
placeholder_deps = pl "DEPS";
placeholder_flutter = pl "FLUTTER";
fetchAttrs = [ "src" "sourceRoot" "setSourceRoot" "unpackPhase" "patches" ];
getAttrsOrNull = names: attrs: lib.genAttrs names (name: if attrs ? ${name} then attrs.${name} else null);
flutterDeps = [
# flutter deps
flutter.unwrapped
bash
curl
flutter.dart
git
unzip
which
xz
];
self =
(self: llvmPackages_13.stdenv.mkDerivation (args // {
deps = stdenvNoCC.mkDerivation (lib.recursiveUpdate (getAttrsOrNull fetchAttrs args) {
name = "${self.name}-deps-flutter-v${flutter.unwrapped.version}-${stdenvNoCC.targetPlatform.system}.tar.gz";
nativeBuildInputs = flutterDeps ++ [
nukeReferences
];
# avoid pub phase
dontBuild = true;
installPhase = ''
. ${../fetchgit/deterministic-git}
TMP=$(mktemp -d)
export HOME="$TMP"
export PUB_CACHE=''${PUB_CACHE:-"$HOME/.pub-cache"}
export ANDROID_EMULATOR_USE_SYSTEM_LIBS=1
flutter config --no-analytics &>/dev/null # mute first-run
flutter config --enable-linux-desktop
flutter packages get
flutter build linux || true # so it downloads tools
${lib.optionalString (args ? flutterExtraFetchCommands) args.flutterExtraFetchCommands}
RES="$TMP"
mkdir -p "$RES/f"
# so we can use lock, diff yaml
cp "pubspec.yaml" "$RES"
cp "pubspec.lock" "$RES"
[[ -e .packages ]] && mv .packages "$RES/f"
mv .dart_tool .flutter-plugins .flutter-plugins-dependencies "$RES/f"
# replace paths with placeholders
find "$RES" -type f -exec sed -i \
-e s,$TMP,${placeholder_deps},g \
-e s,${flutter.unwrapped},${placeholder_flutter},g \
{} +
remove_line_matching() {
replace_line_matching "$1" "$2" ""
}
replace_line_matching() {
sed "s|.*$2.*|$3|g" -r -i "$1"
}
# nuke nondeterminism
# clientId is random
remove_line_matching "$RES/.flutter" clientId
# deterministic git repos
find "$RES" -iname .git -type d | while read -r repoGit; do
make_deterministic_repo "$(dirname "$repoGit")"
done
# dart _fetchedAt, etc
DART_DATE=$(date --date="@$SOURCE_DATE_EPOCH" -In | sed "s|,|.|g" | sed "s|+.*||g")
find "$RES/.pub-cache" -iname "*.json" -exec sed -r 's|.*_fetchedAt.*| "_fetchedAt": "'"$DART_DATE"'",|g' -i {} +
replace_line_matching "$RES/f/.dart_tool/package_config.json" '"generated"' '"generated": "'"$DART_DATE"'",'
replace_line_matching "$RES/f/.flutter-plugins-dependencies" '"date_created"' '"date_created": "'"$DART_DATE"'",'
[[ -e "$RES/f/.packages" ]] && remove_line_matching "$RES/f/.packages" "Generated by pub"
# nuke refs
find "$RES" -type f -exec nuke-refs {} +
# Build a reproducible tar, per instructions at https://reproducible-builds.org/docs/archives/
tar --owner=0 --group=0 --numeric-owner --format=gnu \
--sort=name --mtime="@$SOURCE_DATE_EPOCH" \
-czf "$out" -C "$RES" .
'';
GIT_SSL_CAINFO = "${cacert}/etc/ssl/certs/ca-bundle.crt";
SSL_CERT_FILE = "${cacert}/etc/ssl/certs/ca-bundle.crt";
impureEnvVars = lib.fetchers.proxyImpureEnvVars ++ [
"GIT_PROXY_COMMAND" "NIX_GIT_SSL_CAINFO" "SOCKS_SERVER"
];
# unnecesarry
dontFixup = true;
outputHashAlgo = if self ? vendorHash then null else "sha256";
# outputHashMode = "recursive";
outputHash = if self ? vendorHash then
self.vendorHash
else if self ? vendorSha256 then
self.vendorSha256
else
lib.fakeSha256;
});
nativeBuildInputs = flutterDeps ++ [
# flutter dev tools
cmake
ninja
pkg-config
wrapGAppsHook
# flutter likes dynamic linking
autoPatchelfHook
] ++ lib.optionals (args ? nativeBuildInputs) args.nativeBuildInputs;
buildInputs = [
# cmake deps
gtk3
glib
pcre
util-linux
# also required by cmake, not sure if really needed or dep of all packages
libselinux
libsepol
libthai
libdatrie
xorg.libXdmcp
xorg.libXtst
libxkbcommon
dbus
at-spi2-core
libsecret
jsoncpp
# build deps
xorg.libX11
# directly required by build
libepoxy
] ++ lib.optionals (args ? buildInputs) args.buildInputs;
# TODO: do we need this?
NIX_LDFLAGS = "-rpath ${lib.makeLibraryPath self.buildInputs}";
NIX_CFLAGS_COMPILE = "-I${xorg.libX11}/include";
LD_LIBRARY_PATH = lib.makeLibraryPath self.buildInputs;
configurePhase = ''
runHook preConfigure
# for some reason fluffychat build breaks without this - seems file gets overriden by some tool
cp pubspec.yaml pubspec-backup
# we get this from $depsFolder so disabled for now, but we might need it again once deps are fetched properly
# flutter config --no-analytics >/dev/null 2>/dev/null # mute first-run
# flutter config --enable-linux-desktop
# extract deps
depsFolder=$(mktemp -d)
tar xzf "$deps" -C "$depsFolder"
# after extracting update paths to point to real paths
find "$depsFolder" -type f -exec sed -i \
-e s,${placeholder_deps},$depsFolder,g \
-e s,${placeholder_flutter},${flutter.unwrapped},g \
{} +
# ensure we're using a lockfile for the right package version
if [ -e pubspec.lock ]; then
# FIXME: currently this is broken. in theory this should not break, but flutter has it's own way of doing things.
# diff -u pubspec.lock $depsFolder/pubspec.lock
true
else
cp -v "$depsFolder/pubspec.lock" .
fi
diff -u pubspec.yaml $depsFolder/pubspec.yaml
mv -v $(find $depsFolder/f -type f) .
# prepare
export HOME=$depsFolder
export PUB_CACHE=''${PUB_CACHE:-"$HOME/.pub-cache"}
export ANDROID_EMULATOR_USE_SYSTEM_LIBS=1
# binaries need to be patched
autoPatchelf -- "$depsFolder"
runHook postConfigure
'';
buildPhase = ''
runHook preBuild
# for some reason fluffychat build breaks without this - seems file gets overriden by some tool
mv pubspec-backup pubspec.yaml
mkdir -p build/flutter_assets/fonts
flutter packages get --offline -v
flutter build linux --release -v
runHook postBuild
'';
installPhase = ''
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 $f)
done
# this confuses autopatchelf hook otherwise
rm -rf "$depsFolder"
# 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
runHook postInstall
'';
})) self;
in
self