tjh.dev
1# Schema:
2# ${flutterVersion}.${targetPlatform}.${hostPlatform}
3#
4# aarch64-darwin as a host is not yet supported.
5# https://github.com/flutter/flutter/issues/60118
6{ lib
7, runCommand
8, xorg
9, cacert
10, unzip
11
12, flutterPlatform
13, systemPlatform
14, flutter
15, hash
16}:
17
18let
19 flutterPlatforms = [
20 "android"
21 "ios"
22 "web"
23 "linux"
24 "windows"
25 "macos"
26 "fuchsia"
27 "universal"
28 ];
29
30 flutter' = flutter.override {
31 # Use a version of Flutter with just enough capabilities to download
32 # artifacts.
33 supportedTargetFlutterPlatforms = [ ];
34
35 # Modify flutter-tool's system platform in order to get the desired platform's hashes.
36 flutter = flutter.unwrapped.override {
37 flutterTools = flutter.unwrapped.tools.override {
38 inherit systemPlatform;
39 };
40 };
41 };
42in
43runCommand "flutter-artifacts-${flutterPlatform}-${systemPlatform}"
44{
45 nativeBuildInputs = [ xorg.lndir flutter' unzip ];
46
47 NIX_FLUTTER_TOOLS_VM_OPTIONS = "--root-certs-file=${cacert}/etc/ssl/certs/ca-bundle.crt";
48 NIX_FLUTTER_OPERATING_SYSTEM = {
49 "x86_64-linux" = "linux";
50 "aarch64-linux" = "linux";
51 "x86_64-darwin" = "macos";
52 "aarch64-darwin" = "macos";
53 }.${systemPlatform};
54
55 outputHash = hash;
56 outputHashMode = "recursive";
57 outputHashAlgo = "sha256";
58
59 passthru = {
60 inherit flutterPlatform;
61 };
62} ''
63 export FLUTTER_ROOT="$NIX_BUILD_TOP"
64 lndir -silent '${flutter'}' "$FLUTTER_ROOT"
65 rm -rf "$FLUTTER_ROOT/bin/cache"
66 mkdir "$FLUTTER_ROOT/bin/cache"
67
68 HOME="$(mktemp -d)" flutter precache -v '--${flutterPlatform}' ${builtins.concatStringsSep " " (map (p: "'--no-${p}'") (lib.remove flutterPlatform flutterPlatforms))}
69 rm -rf "$FLUTTER_ROOT/bin/cache/lockfile"
70 find "$FLUTTER_ROOT" -type l -lname '${flutter'}/*' -delete
71
72 cp -r bin/cache "$out"
73''