From ef20897b8196b4f3da3ee9bcc5ab731851d3aa2b Mon Sep 17 00:00:00 2001
From: Meghan Denny <hello@nektro.net>
Date: Sat, 10 Jul 2021 18:14:33 -0700
Subject: [PATCH] add `version` command, closes #18

---
 src/cmd/version.zig | 39 +++++++++++++++++++++++++++++++++++++++
 src/lib.zig         |  1 +
 2 files changed, 40 insertions(+)
 create mode 100644 src/cmd/version.zig

diff --git a/src/cmd/version.zig b/src/cmd/version.zig
new file mode 100644
index 0000000000000000000000000000000000000000..d84ac1b288dba878ee40375e3fd38fc3f67d494e
--- /dev/null
+++ b/src/cmd/version.zig
@@ -0,0 +1,39 @@
+const std = @import("std");
+const gpa = std.heap.c_allocator;
+const builtin = std.builtin;
+
+const u = @import("./../util/index.zig");
+
+//
+//
+
+pub fn execute(args: [][]u8) !void {
+    _ = args;
+
+    const root = @import("root");
+    const build_options = if (@hasDecl(root, "build_options")) root.build_options else struct {};
+    const version = if (@hasDecl(build_options, "version")) build_options.version else "unknown";
+
+    const stdout = std.io.getStdOut();
+    const w = stdout.writer();
+
+    try w.writeAll("zigmod");
+
+    try w.print(" {s}", .{version});
+    if (std.mem.eql(u8, version, "dev")) {
+        try w.print(
+            "-{s}",
+            .{
+                (try u.git_rev_HEAD(gpa, std.fs.cwd()))[0..7],
+            },
+        );
+    }
+
+    try w.print(" {s}", .{@tagName(builtin.os.tag)});
+
+    try w.print(" {s}", .{@tagName(builtin.cpu.arch)});
+
+    try w.print(" {s}", .{@tagName(builtin.abi)});
+
+    try w.writeAll("\n");
+}
diff --git a/src/lib.zig b/src/lib.zig
index 42d12db5d5ca5724d6b5d3fb0fa8e3bf0a2164b3..ffae5125662fac10d39b3c9a01c27157c8e4a963 100644
--- a/src/lib.zig
+++ b/src/lib.zig
@@ -1,4 +1,5 @@
 pub const commands_to_bootstrap = struct {
+    pub const version = @import("./cmd/version.zig");
     pub const fetch = @import("./cmd/fetch.zig");
     pub const ci = @import("./cmd/ci.zig");
 };
-- 
2.54.0