diff --git a/scripts/fish/os.fish b/scripts/fish/os.fish
new file mode 100644
index 0000000..e1e7d57
--- /dev/null
+++ b/scripts/fish/os.fish
@@ -0,0 +1,9 @@
+switch (uname)
+   case Linux
+      set -x CC clang
+      set -x CXX clang++
+   case Darwin
+      set -x Qt5_DIR /usr/local/opt/qt/
+end
+
+## EOF