From 8baef2b0a492a23f47bd6f2dacec0109ea04395c Mon Sep 17 00:00:00 2001
From: Phillip Seeber <phillip.seeber@uni-jena.de>
Date: Mon, 28 Jul 2025 16:12:02 +0200
Subject: [PATCH] dftd4: add option to build with cmake in addition to meson

---
 pkgs/by-name/df/dftd4/cmake.patch | 13 +++++++++++++
 pkgs/by-name/df/dftd4/package.nix | 28 +++++++++++++++++++++++++---
 2 files changed, 38 insertions(+), 3 deletions(-)
 create mode 100644 pkgs/by-name/df/dftd4/cmake.patch

diff --git a/pkgs/by-name/df/dftd4/cmake.patch b/pkgs/by-name/df/dftd4/cmake.patch
new file mode 100644
index 000000000000..00c7e907733b
--- /dev/null
+++ b/pkgs/by-name/df/dftd4/cmake.patch
@@ -0,0 +1,13 @@
+diff --git a/config/template.pc b/config/template.pc
+index 3d6efbb..e338a42 100644
+--- a/config/template.pc
++++ b/config/template.pc
+@@ -1,6 +1,6 @@
+ prefix=@CMAKE_INSTALL_PREFIX@
+-libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
+-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
++libdir=@CMAKE_INSTALL_FULL_LIBDIR@
++includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@
+ 
+ Name: @PROJECT_NAME@
+ Description: @PROJECT_DESCRIPTION@
diff --git a/pkgs/by-name/df/dftd4/package.nix b/pkgs/by-name/df/dftd4/package.nix
index e3e54eba9c6b..e77583857422 100644
--- a/pkgs/by-name/df/dftd4/package.nix
+++ b/pkgs/by-name/df/dftd4/package.nix
@@ -2,7 +2,10 @@
   stdenv,
   lib,
   fetchFromGitHub,
+  fetchpatch,
   gfortran,
+  buildType ? "meson",
+  cmake,
   meson,
   ninja,
   pkg-config,
@@ -15,6 +18,12 @@
 }:
 
 assert !blas.isILP64 && !lapack.isILP64;
+assert (
+  builtins.elem buildType [
+    "meson"
+    "cmake"
+  ]
+);
 
 stdenv.mkDerivation rec {
   pname = "dftd4";
@@ -30,24 +39,37 @@ stdenv.mkDerivation rec {
   patches = [
     # Make sure fortran headers are installed directly in /include
     ./fortran-module-dir.patch
+
+    # Fix wrong generation of package config include paths
+    ./cmake.patch
   ];
 
   nativeBuildInputs = [
     gfortran
-    meson
-    ninja
     pkg-config
     python3
-  ];
+  ]
+  ++ lib.optionals (buildType == "meson") [
+    meson
+    ninja
+  ]
+  ++ lib.optional (buildType == "cmake") cmake;
 
   buildInputs = [
     blas
     lapack
+  ];
+
+  propagatedBuildInputs = [
     mctc-lib
     mstore
     multicharge
   ];
 
+  cmakeFlags = [
+    (lib.strings.cmakeBool "BUILD_SHARED_LIBS" (!stdenv.hostPlatform.isStatic))
+  ];
+
   outputs = [
     "out"
     "dev"