Add global lib relativePath

flake-parts/lib.nix

@@ -1,4 +1,7 @@
 { self, inputs, ... }:
 {
-  flake.lib = import "${self}/lib" inputs.nixpkgs.lib;
+  flake.lib = import "${self}/lib" {
+    inherit (inputs.nixpkgs) lib;
+    inherit self;
+  };
 }

lib/default.nix

@@ -1,4 +1,8 @@
-lib: {
+{
+  lib,
+  self,
+}:
+{
   isTailscaleDomain = domain: domain |> lib.hasSuffix ".ts.net";
 
   subdomainOf = domain: domain |> lib.splitString "." |> lib.head;
@@ -15,4 +19,6 @@ lib: {
 
   mkUnprotectedMessage =
     name: "${name} should only be exposed on private networks; access control isn't yet configured";
+
+  relativePath = path: path |> toString |> lib.removePrefix "${self}/";
 }

modules/system/meta/domains.nix

@@ -2,6 +2,7 @@
   config,
   self,
   lib,
+  lib',
   ...
 }:
 let
@@ -34,10 +35,10 @@ in
           |> lib.map (value: value.options.meta.domains.list.definitionsWithLocations)
           |> lib.concatLists
           |> lib.concatMap (
-            entry:
-            entry.value
+            { file, value }:
+            value
             |> lib.map (domain: {
-              file = entry.file |> lib.removePrefix "${self}/";
+              file = lib'.relativePath file;
               inherit domain;
             })
           )

modules/system/meta/ports.nix

@@ -1,8 +1,8 @@
 {
   config,
   options,
-  self,
   lib,
+  lib',
   ...
 }:
 let
@@ -28,10 +28,10 @@ in
           protocol:
           options.meta.ports.${protocol}.list.definitionsWithLocations
           |> lib.concatMap (
-            entry:
-            entry.value
+            { file, value }:
+            value
             |> lib.map (port: {
-              file = entry.file |> lib.removePrefix "${self}/";
+              file = lib'.relativePath file;
               inherit port;
             })
           )