diff --git a/dev/tests/eval-tests.nix b/dev/tests/eval-tests.nix
index 437ee1a..c3c03b6 100644
--- a/dev/tests/eval-tests.nix
+++ b/dev/tests/eval-tests.nix
@@ -26,6 +26,22 @@ rec {
       systems = [ ];
     };
 
+  emptyExposeArgs = mkFlake
+    { inputs.self = { outPath = "the self outpath"; }; }
+    ({ config, moduleLocation, errorLocation, ... }: {
+      flake = {
+        inherit moduleLocation errorLocation;
+      };
+    });
+
+  emptyExposeArgsNoSelf = mkFlake
+    { inputs.self = throw "self won't be available in case of some errors"; }
+    ({ config, moduleLocation, errorLocation, ... }: {
+      flake = {
+        inherit moduleLocation errorLocation;
+      };
+    });
+
   example1 = mkFlake
     { inputs.self = { }; }
     {
@@ -162,6 +178,12 @@ rec {
 
     assert packagesNonStrictInDevShells.packages.a.default == pkg "a" "hello";
 
+    assert emptyExposeArgs.moduleLocation == "the self outpath/flake.nix";
+
+    assert emptyExposeArgs.errorLocation == __curPos.file;
+
+    assert emptyExposeArgsNoSelf.errorLocation == __curPos.file;
+
     ok;
 
   result = runTests "ok";
diff --git a/lib.nix b/lib.nix
index f338367..eaa5679 100644
--- a/lib.nix
+++ b/lib.nix
@@ -83,6 +83,22 @@ let
         '')
       , moduleLocation ? "${self.outPath}/flake.nix"
       }:
+      let
+        module = lib.setDefaultModuleLocation errorLocation module;
+        inputsPos = builtins.unsafeGetAttrPos "inputs" args;
+        errorLocation =
+          # Best case: user makes it explicit
+          args.moduleLocation or (
+            # Slightly worse: Nix does not technically commit to unsafeGetAttrPos semantics
+            if inputsPos != null
+            then inputsPos.file
+            # Slightly worse: self may not be valid when an error occurs
+            else if args?inputs.self.outPath
+            then args.inputs.self.outPath + "/flake.nix"
+            # Fallback
+            else "<mkFlake argument>"
+          );
+      in
       throwIf
         (!args?self && !args?inputs) ''
         When invoking flake-parts, you must pass in the flake output arguments.
@@ -121,17 +137,7 @@ let
 
     mkFlake = args: module:
       let
-        inputsPos = builtins.unsafeGetAttrPos "inputs" args;
-        moduleLocation =
-          args.moduleLocation or (
-            if inputsPos != null
-            then inputsPos.file
-            else if args?inputs.self.outPath
-            then args.inputs.self.outPath + "/flake.nix"
-            else "<mkFlake argument>"
-          );
-        mod = lib.setDefaultModuleLocation moduleLocation module;
-        eval = flake-parts-lib.evalFlakeModule (args // { inherit moduleLocation; }) mod;
+        eval = flake-parts-lib.evalFlakeModule args module;
       in
       eval.config.flake;