Add function for fish to create library symlinks

home-manager/modules/fish/functions.nix

@@ -40,4 +40,27 @@
     '';
     description = "Use clang-format to format all changed and added files";
   };
+
+  linklib = {
+    body = ''
+      function linklib --argument lib
+        set libcomponents (string split "." "$lib")
+        set libname $libcomponents[1].$libcomponents[2]
+        set libmajor $libname.$libcomponents[3]
+  
+        if test -f $libname -o -L $libname
+          echo "$libname already exists"
+          return 1
+        end
+
+        if test -f $libmajor -o -L $libmajor
+          echo "$libmajor already exists"
+          return 2
+        end
+
+        ln -s $lib $libmajor
+        ln -s $libmajor $libname
+      end
+    '';
+  };
 }