libpsl: backport pkg-config static fix

This was merged 9 months ago, and still no release, so let's backport
it, because the alternative is adding the same hack as curl in other
packages, like libsoup.

pkgs/by-name/cu/curlMinimal/package.nix

@@ -123,11 +123,6 @@ stdenv.mkDerivation (finalAttrs: {
   preConfigure = ''
     sed -e 's|/usr/bin|/no-such-path|g' -i.bak configure
     rm src/tool_hugehelp.c
-  '' + lib.optionalString (pslSupport && stdenv.hostPlatform.isStatic) ''
-    # curl doesn't understand that libpsl2 has deps because it doesn't use
-    # pkg-config.
-    # https://github.com/curl/curl/pull/12919
-    configureFlagsArray+=("LIBS=-lidn2 -lunistring")
   '';
 
   configureFlags = [

pkgs/by-name/li/libpsl/package.nix

@@ -2,6 +2,7 @@
   lib,
   stdenv,
   fetchurl,
+  fetchpatch,
   autoreconfHook,
   docbook_xsl,
   docbook_xml_dtd_43,
@@ -25,6 +26,16 @@ stdenv.mkDerivation rec {
     hash = "sha256-mp9qjG7bplDPnqVUdc0XLdKEhzFoBOnHMgLZdXLNOi0=";
   };
 
+  patches = [
+    # Can be dropped on next release, or if we switch to Meson for
+    # this package.  Test pkgsStatic.curl still builds.
+    (fetchpatch {
+      name = "static.patch";
+      url = "https://github.com/rockdaboot/libpsl/commit/490bd6f98a2addcade55028ea60c36cce07e21e4.patch";
+      hash = "sha256-7Uu9gaVuA9Aly2mmnhUVgv2BYQTSBODJ2rDl5xp0uVY=";
+    })
+  ];
+
   outputs =
     [
       "out"