build: fix trailing newline in version string

build.zig

@@ -61,7 +61,10 @@ pub fn build(b: *zbs.Builder) !void {
                 &ret,
                 .Inherit,
             ) catch break :blk version;
-            break :blk try std.fmt.allocPrintZ(b.allocator, "{s}-{s}", .{ version, git_commit_hash });
+            break :blk try std.fmt.allocPrintZ(b.allocator, "{s}-{s}", .{
+                version,
+                mem.trim(u8, git_commit_hash, &std.ascii.spaces),
+            });
         } else {
             break :blk version;
         }

river/main.zig

@@ -63,7 +63,7 @@ pub fn main() anyerror!void {
     }
 
     if (result.boolFlag("-version")) {
-        try io.getStdOut().writeAll(build_options.version);
+        try io.getStdOut().writeAll(build_options.version ++ "\n");
         os.exit(0);
     }
     if (result.argFlag("-log-level")) |level_str| {

riverctl/main.zig

@@ -78,7 +78,7 @@ fn _main() !void {
         os.exit(0);
     }
     if (result.boolFlag("-version")) {
-        try io.getStdOut().writeAll(@import("build_options").version);
+        try io.getStdOut().writeAll(@import("build_options").version ++ "\n");
         os.exit(0);
     }
 

rivertile/main.zig

@@ -332,7 +332,7 @@ pub fn main() !void {
     if (result.args.len != 0) fatalPrintUsage("unknown option '{s}'", .{result.args[0]});
 
     if (result.boolFlag("-version")) {
-        try std.io.getStdOut().writeAll(@import("build_options").version);
+        try std.io.getStdOut().writeAll(@import("build_options").version ++ "\n");
         os.exit(0);
     }
     if (result.argFlag("-view-padding")) |raw| {