CHANGELOG.md

+# [1.0.0-beta.5](https://git.gitlab.arm.com/bazel/toolchain_utils/compare/v1.0.0-beta.4...v1.0.0-beta.5) (2024-04-24)
+
+### Features
+
+- support detecting triplet on MinGW ([ff280ae](https://git.gitlab.arm.com/bazel/toolchain_utils/commit/ff280ae0b1aed1bfca9b667b07ddbb657e98cfc6))
+
 # [1.0.0-beta.4](https://git.gitlab.arm.com/bazel/toolchain_utils/compare/v1.0.0-beta.3...v1.0.0-beta.4) (2024-03-25)
 
 ### Bug Fixes

MODULE.bazel

 module(
     name = "toolchain_utils",
-    version = "1.0.0-beta.4",
+    version = "1.0.0-beta.5",
     bazel_compatibility = [
         ">=7.0.0",
     ],

toolchain/local/triplet/libc.bzl

@@ -39,14 +39,16 @@ def _ldd(rctx, path):
         })
         return VersionedInfo("musl.{}".format(version))
 
-    if first.startswith("ldd") and "Free Software Foundation" in second:
+    if first.startswith("ldd"):
         _, _, description = first.partition(" (")
         description, _, version = description.rpartition(") ")
-        version = version
 
         if description == "GNU libc" or "GLIBC" in description:
             return VersionedInfo("gnu.{}".format(version))
 
+        if description == "cygwin":
+            return VersionedInfo("cygwin.{}".format(version))
+
     fail("Failed to detect `{}` version:\n{}".format(path, result.stdout))
 
 def _powershell(rctx, path):

toolchain/local/triplet/os.bzl

@@ -164,14 +164,14 @@ def os(rctx):
     if path:
         return _sw_vers(rctx, path)
 
-    path = rctx.which("uname")
-    if path:
-        return _uname(rctx, path)
-
     path = rctx.which("cmd.exe")
     if path:
         return _cmd(rctx, path)
 
+    path = rctx.which("uname")
+    if path:
+        return _uname(rctx, path)
+
     return VersionedInfo({
         "linux": "linux",
         "windows 10": "windows.10",