bonmin: build documentation

pkgs/development/libraries/science/math/bonmin/default.nix

@@ -1,15 +1,19 @@
 { lib
 , stdenv
 , fetchFromGitHub
+, fontconfig
 , gfortran
 , pkg-config
 , blas
 , bzip2
 , cbc
 , clp
+, doxygen
+, graphviz
 , ipopt
 , lapack
 , libamplsolver
+, texliveSmall
 , zlib
 }:
 
@@ -27,8 +31,11 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [
+    doxygen
     gfortran
+    graphviz
     pkg-config
+    texliveSmall
   ];
   buildInputs = [
     blas
@@ -45,6 +52,19 @@ stdenv.mkDerivation rec {
     "--with-asl-lib=-lipoptamplinterface -lamplsolver"
   ];
 
+  # Fix doc install. Should not be necessary after next release
+  # ref https://github.com/coin-or/Bonmin/commit/4f665bc9e489a73cb867472be9aea518976ecd28
+  sourceRoot = "${src.name}/Bonmin";
+
+  # Fontconfig error: Cannot load default config file: No such file: (null)
+  env.FONTCONFIG_FILE = "${fontconfig.out}/etc/fonts/fonts.conf";
+
+  # Fontconfig error: No writable cache directories
+  preBuild = "export XDG_CACHE_HOME=$(mktemp -d)";
+
+  # install documentation
+  postInstall = "make install-doxygen-docs";
+
   meta = {
     description = "Open-source code for solving general MINLP (Mixed Integer NonLinear Programming) problems";
     mainProgram = "bonmin";