build: fix build on darwin

macOS names the stat ctime field Ctimespec rather than Ctim, so stat.go
failed to compile on a Mac. Split the darwin case into its own file and
exclude darwin from the generic variant. Deploys are unaffected.

2 files changed, 17 insertions, 2 deletions

diff --git a/app/stat-darwin.go b/app/stat-darwin.go
new file mode 100644
index 0000000..f3e05bc
--- /dev/null
+++ b/app/stat-darwin.go
@@ -0,0 +1,15 @@
+//go:build darwin
+// +build darwin
+
+package app
+
+import (
+	"syscall"
+	"time"
+)
+
+// macOS names the ctime field Ctimespec rather than Ctim, so it needs its own
+// variant to let the project build and test on a Mac (deploys are Linux).
+func statTime(stat *syscall.Stat_t) int64 {
+	return time.Unix(stat.Ctimespec.Unix()).UnixMilli()
+}
diff --git a/app/stat.go b/app/stat.go
index a5bebcc..8f0d231 100755
--- a/app/stat.go
+++ b/app/stat.go
@@ -1,5 +1,5 @@
-//go:build !freebsd
-// +build !freebsd
+//go:build !freebsd && !darwin
+// +build !freebsd,!darwin
 
 package app