Can not `@import` dependencies in build.zig scripts

[urso]

Zig Version

0.12.0-dev.3381+7057bffc1

Steps to Reproduce and Observed Behavior

Unexpected error importing a package dependencie in build scripts.

build.zig.zon:

.{
    .name = "my_extension",
    .version = "0.1.0",
    .paths = .{
        "src",
    },
    .dependencies = .{
        .pgzx = .{
            .url = "https://github.com/xataio/pgzx/archive/main.tar.gz",
            .hash = "1220af8396f144d87259e959493e54d27f52006bab3905a349d2bc96130b437faaed",
        },
    },
}

build.zig:

const std = @import("std");
const pgzx = @import("pgzx");

pub fn build(b: *std.Build) void {
    _ = b;
    _ = pgzx;
}

Error message:

$ zig/build/stage3/bin/zig build
xxxx/build.zig:2:22: error: no module named 'pgzx' available within module root.@build
const pgzx = @import("pgzx");

Expected Behavior

According to #14279 it seems that it shall be possible to import package dependencies in build scripts. This allows projects to share some common build utilities with downstream projects. We used that mechanism, but it seems to have been regressed recently.

Note: It is still possible to import a package that is referenced by path:

    .dependencies = .{
        .pgzx = .{
            .path = "./../pgzx",
        },
    },

[xdBronch]

the dependency only has src in the paths field which means everything else is discarded when it's fetched and importing a dependency requires it to have a build.zig

[urso]

Adding build.zig to paths did solve the issue.

I swear it used to work without before :)

Thank you!

[linusg]

Also started hitting this. How does one fix this if the dependency doesn't have a build.zig.zon?