libarchive: backport fix for static linking

libarchive 3.6.2 broke static linking, which is causing the
nixStatic jobs to fail on Hydra:

- https://hydra.nixos.org/job/nixpkgs/cross-trunk/powerpc64le-nixCrossStatic.nixStatic.x86_64-linux
- https://hydra.nixos.org/job/nixpkgs/cross-trunk/mips64el-nixCrossStatic.nixStatic.x86_64-linux

This commit backports the fix (merged upstream) from libarchive
3.6.3.

Co-authored-by: Anderson Torres <torres.anderson.85@protonmail.com>

pkgs/development/libraries/libarchive/default.nix

@@ -1,6 +1,7 @@
 { lib
 , stdenv
 , fetchFromGitHub
+, fetchpatch
 , acl
 , attr
 , autoreconfHook
@@ -29,7 +30,7 @@ let
   autoreconfHook = buildPackages.autoreconfHook269;
 in
 assert xarSupport -> libxml2 != null;
-stdenv.mkDerivation (finalAttrs: {
+(stdenv.mkDerivation (finalAttrs: {
   pname = "libarchive";
   version = "3.6.2";
 
@@ -118,4 +119,16 @@ stdenv.mkDerivation (finalAttrs: {
   passthru.tests = {
     inherit cmake nix samba;
   };
-})
+})).overrideAttrs(previousAttrs:
+  assert previousAttrs.version == "3.6.2";
+  lib.optionalAttrs stdenv.hostPlatform.isStatic {
+    patches = [
+      # fixes static linking; upstream in releases after 3.6.2
+      # https://github.com/libarchive/libarchive/pull/1825 merged upstream
+      (fetchpatch {
+        name = "001-only-add-iconv-to-pc-file-if-needed.patch";
+        url = "https://github.com/libarchive/libarchive/commit/1f35c466aaa9444335a1b854b0b7223b0d2346c2.patch";
+        hash = "sha256-lb+zwWSH6/MLUIROvu9I/hUjSbb2jOWO755WC/r+lbY=";
+      })
+    ];
+  })