diff -pruN 0.16.39/debian/changelog 0.16.40/debian/changelog
--- 0.16.39/debian/changelog	2025-10-16 03:59:41.000000000 +0000
+++ 0.16.40/debian/changelog	2025-10-18 01:43:28.000000000 +0000
@@ -1,3 +1,9 @@
+haskell-devscripts (0.16.40) unstable; urgency=medium
+
+  * dh_haskell_provides_ghc: only operate on -dev and -prof packages
+
+ -- Scott Talbert <swt@techie.net>  Fri, 17 Oct 2025 21:43:28 -0400
+
 haskell-devscripts (0.16.39) unstable; urgency=medium
 
   * Only provide $haskell:ghc-package substvar for -dev pkgs (Closes: #1118032)
diff -pruN 0.16.39/dh_haskell_provides_ghc 0.16.40/dh_haskell_provides_ghc
--- 0.16.39/dh_haskell_provides_ghc	2025-10-16 03:53:28.000000000 +0000
+++ 0.16.40/dh_haskell_provides_ghc	2025-10-18 01:43:28.000000000 +0000
@@ -54,6 +54,9 @@ init_hs_env();
 
 for my $installable (@{ $dh{DOPACKAGES} }) {
 
+    my $type = installable_type($installable);
+    next if ($type ne 'dev' && $type ne 'prof');
+
     my $compiler = installable_hc($installable) || $ENV{DEB_DEFAULT_COMPILER};
     my $pkgdir = hc_pkgdir($compiler);
 
@@ -82,7 +85,6 @@ for my $installable (@{ $dh{DOPACKAGES}
 
     my $substvars_path = "debian/$installable.substvars";
 
-    my $type = installable_type($installable);
     if ($type eq 'dev') {
         replace_line($substvars_path, "haskell:$compiler-package",
             join($SPACE, @hashed_ids));