it finally compiles :)

flake.lock

@@ -5,11 +5,11 @@
         "nixpkgs-lib": "nixpkgs-lib"
       },
       "locked": {
-        "lastModified": 1767609335,
-        "narHash": "sha256-feveD98mQpptwrAEggBQKJTYbvwwglSbOv53uCfH9PY=",
+        "lastModified": 1769996383,
+        "narHash": "sha256-AnYjnFWgS49RlqX7LrC4uA+sCCDBj0Ry/WOJ5XWAsa0=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "250481aafeb741edfe23d29195671c19b36b6dca",
+        "rev": "57928607ea566b5db3ad13af0e57e921e6b12381",
         "type": "github"
       },
       "original": {
@@ -25,11 +25,11 @@
         "nixpkgs": "nixpkgs"
       },
       "locked": {
-        "lastModified": 1769198512,
-        "narHash": "sha256-ZsQm3CwvicJBv4CMJJzRkTcYYcrghqzVabL9IehNz9k=",
+        "lastModified": 1770911191,
+        "narHash": "sha256-fePV3+4uHg1tQH83rUO/7gQOGexHdaxyVkO2X3HkOA0=",
         "owner": "well-typed",
         "repo": "hs-bindgen",
-        "rev": "f99ed4ddfc7808b3eb28bbf089612b6a52983685",
+        "rev": "087884c110948e7bd67bec0ae8004e5396f63241",
         "type": "github"
       },
       "original": {
@@ -41,27 +41,27 @@
     "libclang-bindings-src": {
       "flake": false,
       "locked": {
-        "lastModified": 1768982090,
-        "narHash": "sha256-EgM9ZJvbM0+SQ8f9P27Rnx4dY8Q1fWtGVXsRl5f0Vfk=",
+        "lastModified": 1770274896,
+        "narHash": "sha256-JnxJBo2L4URFD8JbpjnPG/ej/xKFe7y5ZpjnvIztwAM=",
         "owner": "well-typed",
         "repo": "libclang",
-        "rev": "27f20c2e320f779314175ee3e82072fec61b8391",
+        "rev": "155642a4a4a9f0414a058a8f08f39aa6c7bb57ed",
         "type": "github"
       },
       "original": {
         "owner": "well-typed",
         "repo": "libclang",
-        "rev": "27f20c2e320f779314175ee3e82072fec61b8391",
+        "rev": "155642a4a4a9f0414a058a8f08f39aa6c7bb57ed",
         "type": "github"
       }
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1767364772,
-        "narHash": "sha256-fFUnEYMla8b7UKjijLnMe+oVFOz6HjijGGNS1l7dYaQ=",
+        "lastModified": 1770169770,
+        "narHash": "sha256-awR8qIwJxJJiOmcEGgP2KUqYmHG4v/z8XpL9z8FnT1A=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "16c7794d0a28b5a37904d55bcca36003b9109aaa",
+        "rev": "aa290c9891fa4ebe88f8889e59633d20cc06a5f2",
         "type": "github"
       },
       "original": {
@@ -73,11 +73,11 @@
     },
     "nixpkgs-lib": {
       "locked": {
-        "lastModified": 1765674936,
-        "narHash": "sha256-k00uTP4JNfmejrCLJOwdObYC9jHRrr/5M/a/8L2EIdo=",
+        "lastModified": 1769909678,
+        "narHash": "sha256-cBEymOf4/o3FD5AZnzC3J9hLbiZ+QDT/KDuyHXVJOpM=",
         "owner": "nix-community",
         "repo": "nixpkgs.lib",
-        "rev": "2075416fcb47225d9b68ac469a5c4801a9c4dd85",
+        "rev": "72716169fe93074c333e8d0173151350670b824c",
         "type": "github"
       },
       "original": {
@@ -88,11 +88,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1765772535,
-        "narHash": "sha256-aq+dQoaPONOSjtFIBnAXseDm9TUhIbe215TPmkfMYww=",
+        "lastModified": 1770843696,
+        "narHash": "sha256-LovWTGDwXhkfCOmbgLVA10bvsi/P8eDDpRudgk68HA8=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "09b8fda8959d761445f12b55f380d90375a1d6bb",
+        "rev": "2343bbb58f99267223bc2aac4fc9ea301a155a16",
         "type": "github"
       },
       "original": {

generate.sh

@@ -1,4 +1,3 @@
-set -x
 echo "# copying header..."
 
 mkdir -p lib/include
@@ -19,33 +18,32 @@ done
 
 echo "# creating c file from header..."
 
+# other macro definitions should be defined with ghc-options: -copt-D in *.cabal
 cat > lib/RGFW.c <<EOF
 #define RGFW_IMPLEMENTATION
-#define RGFW_OPENGL
-#define RGFW_EXPORT
 #include "RGFW.h"
 EOF
 
-echo "# creating c object file..."
-
-clang -c lib/RGFW.c -o lib/RGFW.o $CFLAGS -Ilib/include
-
 echo "# generating library RGFW.Generated..."
 
+#  --unsafe _unsafe \
+#  --pointer _pointer \
+set -x
 hs-bindgen-cli preprocess \
   -Ilib/include \
-  --parse-from-main-header-dirs \
+  --unique-id andromeda.hs-rgfw \
   --create-output-dirs \
   --overwrite-files \
+  --single-file \
+  --safe _safe \
   --hs-output-dir lib \
   --module RGFW.Generated \
   --define-macro=RGFW_OPENGL \
   --define-macro=RGFW_EXPORT \
-  --define-macro=RGFW_IMPLEMENTATION \
   $HBC_ARGS \
   RGFW.h
-
-echo "# file tree generated:"
-tree lib
-
 set +x
+
+echo "# generated filetree:"
+
+tree lib

hs-rgfw.cabal

@@ -8,22 +8,12 @@ maintainer: Matrix @andromeda:tchncs.de
 build-type: Simple
 extra-doc-files: README.md
 common warnings
-  ghc-options:
-    -Wall
-    -DRGFW_IMPLEMENTATION
-    -DRGFW_OPENGL
-    -- the following irresponsibly copy-pasted from `nix develop --command "pkg-config --libs --cflags <lots of things>`
-    -I/nix/store/b608h3ylrhrwpi9bc0y0014jf7j03pzl-libglvnd-1.7.0-dev/include -I/nix/store/sbhg4bnrg0l22936dbwrnl33vzd3kcmf-libx11-1.8.12-dev/include -I/nix/store/l7mab2s2kjsz2pz8dfgvh39af7w7gji1-xorgproto-2024.1/include -I/nix/store/7ys6dfy22hkm2bklwq7ll7pmby443fka-libxcursor-1.2.3-dev/include -I/nix/store/jb2w03lbwm7j01zn9qzcnnqcc1ca5dyj-libxi-1.8.2-dev/include -I/nix/store/1315vzcs2vm98pgsdzwsxm7i2mzjc0g7-libxext-1.3.6-dev/include -I/nix/store/vr2rj7zz28zvsnycx45kn6hhim0ky94z-libxfixes-6.0.2-dev/include -I/nix/store/wkrn5svcggds11pbkyjfka7b2i3wbmhj-libxrender-0.9.12-dev/include -I/nix/store/s7q5sdki2ax8gla778mbhddf5v9gk4vb-libxrandr-1.5.4-dev/include -L/nix/store/mm4v6w3wj8wi5qc6rwdrb2rkqs08whp9-libglvnd-1.7.0/lib -L/nix/store/ja09m2gfni7pqk4bsrhjb8y9cq74rspp-libx11-1.8.12/lib -L/nix/store/ldl1g8r8jfhjv4asb7zkr7ljpgk7q6dv-libxcursor-1.2.3/lib -L/nix/store/xg9763xyrnkxhvqgvxdbfiwxnmz391rx-libxi-1.8.2/lib -L/nix/store/55071y2xjibw8f317scvlg788w31k7k8-libxext-1.3.6/lib -L/nix/store/i6mb757zbagjs50kh7n9sk51f7wsr5f3-libxfixes-6.0.2/lib -L/nix/store/dgjd3hf8ny62vbjg10w64x4jwm7cv81k-libxrender-0.9.12/lib -L/nix/store/llr8wn0a3q8vfrg6i7vr2l2k66izm56a-libxrandr-1.5.4/lib -lXcursor -lXrandr -lXi -lGL -lXrender -lX11 -lXext -lXfixes
-    lib/RGFW.c
-    -fPIC
+  ghc-options: -Wall
 
 library
   import: warnings
-  exposed-modules:
-    , RGFW.Generated
-    , RGFW.Generated.FunPtr
-    , RGFW.Generated.Safe
-    , RGFW.Generated.Unsafe
+  -- hs-bindgen-cli uses --single-file flag, so no other modules
+  exposed-modules: RGFW.Generated
   build-depends:
     , base
     , primitive
@@ -39,6 +29,10 @@ library
   hs-source-dirs: lib
   default-language: Haskell2010
   default-extensions: FlexibleInstances
+  -- options for RGFW passed here
+  ghc-options:
+    -optc-DRGFW_OPENGL
+    -optc-DRGFW_EXPORT
   c-sources: lib/RGFW.c
 
 executable hs-rgfw

src/Main.hs

@@ -1,10 +1,5 @@
 module Main where
 
-import qualified Foreign.Ptr (ToFunPtr)
-
-import qualified RGFW.Generated as RGFW
-
 main :: IO ()
 main = do
   putStrLn "Hello World"
-  window <- toFunPtr ()