diff --git a/pkgs/build-support/trivial-builders/test/write-text-file.nix b/pkgs/build-support/trivial-builders/test/write-text-file.nix
index ac83a75fca4a..2e6685c1980b 100644
--- a/pkgs/build-support/trivial-builders/test/write-text-file.nix
+++ b/pkgs/build-support/trivial-builders/test/write-text-file.nix
@@ -1,34 +1,71 @@
-{ writeTextFile }:
+/*
+  To run:
+
+      cd nixpkgs
+      nix-build -A tests.trivial-builders.writeTextFile
+
+  or to run an individual test case
+
+      cd nixpkgs
+      nix-build -A tests.trivial-builders.writeTextFile.foo
+*/
+{ lib, runCommand, runtimeShell, writeTextFile }:
 let
   veryWeirdName = ''here's a name with some "bad" characters, like spaces and quotes'';
-in writeTextFile {
-  name = "weird-names";
-  destination = "/etc/${veryWeirdName}";
-  text = ''passed!'';
-  checkPhase = ''
-    # intentionally hardcode everything here, to make sure
-    # Nix does not mess with file paths
+in
+lib.recurseIntoAttrs {
 
-    name="here's a name with some \"bad\" characters, like spaces and quotes"
-    fullPath="$out/etc/$name"
+  different-exe-name =
+    let
+      pkg = writeTextFile {
+        name = "bar";
+        destination = "/bin/foo";
+        executable = true;
+        text = ''
+          #!${runtimeShell}
+          echo hi
+        '';
+      };
+    in
+      assert pkg.meta.mainProgram == "foo";
+      assert baseNameOf (lib.getExe pkg) == "foo";
+      assert pkg.name == "bar";
+      runCommand "test-writeTextFile-different-exe-name" {} ''
+        PATH="${lib.makeBinPath [ pkg ]}:$PATH"
+        x=$(foo)
+        [[ "$x" == hi ]]
+        touch $out
+      '';
 
-    if [ -f "$fullPath" ]; then
-      echo "[PASS] File exists!"
-    else
-      echo "[FAIL] File was not created at expected path!"
-      exit 1
-    fi
+  weird-name = writeTextFile {
+    name = "weird-names";
+    destination = "/etc/${veryWeirdName}";
+    text = ''passed!'';
+    checkPhase = ''
+      # intentionally hardcode everything here, to make sure
+      # Nix does not mess with file paths
 
-    content=$(<"$fullPath")
-    expected="passed!"
+      name="here's a name with some \"bad\" characters, like spaces and quotes"
+      fullPath="$out/etc/$name"
 
-    if [ "$content" = "$expected" ]; then
-      echo "[PASS] Contents match!"
-    else
-      echo "[FAIL] File contents don't match!"
-      echo "       Expected: $expected"
-      echo "       Got:      $content"
-      exit 2
-    fi
-  '';
+      if [ -f "$fullPath" ]; then
+        echo "[PASS] File exists!"
+      else
+        echo "[FAIL] File was not created at expected path!"
+        exit 1
+      fi
+
+      content=$(<"$fullPath")
+      expected="passed!"
+
+      if [ "$content" = "$expected" ]; then
+        echo "[PASS] Contents match!"
+      else
+        echo "[FAIL] File contents don't match!"
+        echo "       Expected: $expected"
+        echo "       Got:      $content"
+        exit 2
+      fi
+    '';
+  };
 }