add builder.addFmt API and use it to test stage1 zig fmt

closes #1968

1 files changed, 6 insertions, 0 deletions

diff --git a/std/build.zig b/std/build.zig
index e90d827602..e3fdfbccee 100644
--- a/std/build.zig
+++ b/std/build.zig
@@ -15,6 +15,8 @@ const BufSet = std.BufSet;
 const BufMap = std.BufMap;
 const fmt_lib = std.fmt;
 
+pub const FmtStep = @import("build/fmt.zig").FmtStep;
+
 pub const Builder = struct {
     uninstall_tls: TopLevelStep,
     install_tls: TopLevelStep,
@@ -205,6 +207,10 @@ pub const Builder = struct {
         return remove_dir_step;
     }
 
+    pub fn addFmt(self: *Builder, paths: []const []const u8) *FmtStep {
+        return FmtStep.create(self, paths);
+    }
+
     pub fn version(self: *const Builder, major: u32, minor: u32, patch: u32) Version {
         return Version{
             .major = major,