ci: run zlint on PRs

.github/workflows/nightly.yml

@@ -47,3 +47,9 @@ jobs:
       - run: ./test_repo.sh https://github.com/nektro/zigmod-test-systemlib-dep
       - run: ./test_repo.sh https://github.com/nektro/zigmod-test-local-dep
       - run: ./test_repo.sh https://github.com/nektro/zigmod-test-c-code
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: DonIsaac/zlint-action@v0

build.zig

@@ -1,6 +1,5 @@
 const std = @import("std");
 const string = []const u8;
-const builtin = @import("builtin");
 const deps = @import("./deps.zig");
 
 pub fn build(b: *std.Build) void {

src/cmd/aq.zig

@@ -2,7 +2,6 @@ const std = @import("std");
 const string = []const u8;
 const gpa = std.heap.c_allocator;
 const zfetch = @import("zfetch");
-const extras = @import("extras");
 const json = @import("json");
 
 const u = @import("./../util/index.zig");

src/cmd/zpm.zig

@@ -2,7 +2,6 @@ const std = @import("std");
 const string = []const u8;
 const gpa = std.heap.c_allocator;
 const zfetch = @import("zfetch");
-const extras = @import("extras");
 const json = @import("json");
 
 const u = @import("./../util/index.zig");

src/cmd/zpm/search.zig

@@ -1,7 +1,5 @@
 const std = @import("std");
 const gpa = std.heap.c_allocator;
-const extras = @import("extras");
-
 const zpm = @import("./../zpm.zig");
 
 //

src/cmd/zpm/tags.zig

@@ -1,7 +1,5 @@
 const std = @import("std");
 const gpa = std.heap.c_allocator;
-const extras = @import("extras");
-
 const zpm = @import("./../zpm.zig");
 
 //