1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
{ 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 ? [ ]
, targetFlutterPlatform ? "linux"
, extraWrapProgramArgs ? ""
, ...
}@args:
let
builderArgs = rec {
universal = 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' "$out"
fi
'';
};
linux = universal // {
outputs = universal.outputs or [ ] ++ [ "debug" ];
nativeBuildInputs = (universal.nativeBuildInputs or [ ]) ++ [
wrapGAppsHook
# Flutter requires pkg-config for Linux desktop support, and many plugins
# attempt to use it.
#
# It is available to the `flutter` tool through its wrapper, but it must be
# added here as well so the setup hook adds plugin dependencies to the
# pkg-config search paths.
pkg-config
];
buildInputs = (universal.buildInputs or [ ]) ++ [ glib ];
dontDartBuild = true;
buildPhase = universal.buildPhase or ''
runHook preBuild
mkdir -p build/flutter_assets/fonts
flutter build linux -v --release --split-debug-info="$debug" ${builtins.concatStringsSep " " (map (flag: "\"${flag}\"") flutterBuildFlags)}
runHook postBuild
'';
dontDartInstall = true;
installPhase = universal.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" "$f"
fi
done
runHook postInstall
'';
dontWrapGApps = true;
extraWrapProgramArgs = ''
''${gappsWrapperArgs[@]} \
${extraWrapProgramArgs}
'';
};
web = universal // {
dontDartBuild = true;
buildPhase = universal.buildPhase or ''
runHook preBuild
mkdir -p build/flutter_assets/fonts
flutter build web -v --release ${builtins.concatStringsSep " " (map (flag: "\"${flag}\"") flutterBuildFlags)}
runHook postBuild
'';
dontDartInstall = true;
installPhase = universal.installPhase or ''
runHook preInstall
cp -r build/web "$out"
runHook postInstall
'';
};
}.${targetFlutterPlatform} or (throw "Unsupported Flutter host platform: ${targetFlutterPlatform}");
minimalFlutter = flutter.override { supportedTargetFlutterPlatforms = [ "universal" targetFlutterPlatform ]; };
buildAppWith = flutter: buildDartApplication.override { dart = flutter; };
in
buildAppWith minimalFlutter (builderArgs // { passthru = builderArgs.passthru or { } // { multiShell = buildAppWith flutter builderArgs; }; })
|
