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place zig-cache directory next to build.zig

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* search upwards, if no build.zig is found
* if this fails or any error occurs, fallback to global zig-cache

Closes #11672
This commit is contained in:
Jan Philipp Hafer 2022-05-28 05:06:32 +02:00 committed by Andrew Kelley
parent 3250b20cea
commit 8cab0762d8
1 changed files with 22 additions and 7 deletions
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29
src/main.zig
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@ -2825,13 +2825,28 @@ fn buildOutputType(
break :l global_cache_directory;
}
if (main_pkg) |pkg| {
const cache_dir_path = try pkg.root_src_directory.join(arena, &[_][]const u8{"zig-cache"});
const dir = try pkg.root_src_directory.handle.makeOpenPath("zig-cache", .{});
cleanup_local_cache_dir = dir;
break :l .{
.handle = dir,
.path = cache_dir_path,
};
// search upwards from cwd until we find directory with build.zig
const cwd_path = try process.getCwdAlloc(arena);
const build_zig = "build.zig";
const zig_cache = "zig-cache";
var dirname: []const u8 = cwd_path;
while (true) {
const joined_path = try fs.path.join(arena, &[_][]const u8{ dirname, build_zig });
if (fs.cwd().access(joined_path, .{})) |_| {
const cache_dir_path = try fs.path.join(arena, &[_][]const u8{ dirname, zig_cache });
const dir = try pkg.root_src_directory.handle.makeOpenPath(cache_dir_path, .{});
cleanup_local_cache_dir = dir;
break :l .{ .handle = dir, .path = cache_dir_path };
} else |err| switch (err) {
error.FileNotFound => {
dirname = fs.path.dirname(dirname) orelse {
break :l global_cache_directory;
};
continue;
},
else => break :l global_cache_directory,
}
}
}
// Otherwise we really don't have a reasonable place to put the local cache directory,
// so we utilize the global one.