treewide: use bindgenhook where possible

pkgs/applications/blockchains/electrs/default.nix

@@ -24,8 +24,7 @@ rustPlatform.buildRustPackage rec {
   cargoHash = "sha256-p4t+G13XaCl7+IbX5YyBFF0PmARbw4XlRvnA0PRcjvQ=";
 
   # needed for librocksdb-sys
-  nativeBuildInputs = [ llvmPackages.clang ];
-  LIBCLANG_PATH = "${llvmPackages.libclang.lib}/lib";
+  nativeBuildInputs = [ rustPlatform.bindgenHook ];
 
   # link rocksdb dynamically
   ROCKSDB_INCLUDE_DIR = "${rocksdb}/include";

pkgs/applications/blockchains/lighthouse/default.nix

@@ -34,14 +34,12 @@ rustPlatform.buildRustPackage rec {
 
   buildFeatures = [ "modern" "gnosis" ];
 
-  nativeBuildInputs = [ clang cmake perl protobuf ];
+  nativeBuildInputs = [ rustPlatform.bindgenHook cmake perl protobuf ];
 
   buildInputs = lib.optionals stdenv.isDarwin [
     Security
   ];
 
-  LIBCLANG_PATH = "${llvmPackages.libclang.lib}/lib";
-
   depositContractSpec = fetchurl {
     url = "https://raw.githubusercontent.com/ethereum/eth2.0-specs/v${depositContractSpecVersion}/deposit_contract/contracts/validator_registration.json";
     hash = "sha256-ZslAe1wkmkg8Tua/AmmEfBmjqMVcGIiYHwi+WssEwa8=";

pkgs/applications/blockchains/nearcore/default.nix

@@ -42,14 +42,12 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [
     pkg-config
     protobuf
+    rustPlatform.bindgenHook
   ];
 
   # fat LTO requires ~3.4GB RAM
   requiredSystemFeatures = [ "big-parallel" ];
 
-  LIBCLANG_PATH = "${llvmPackages.libclang.lib}/lib";
-  BINDGEN_EXTRA_CLANG_ARGS = "-isystem ${llvmPackages.libclang.lib}/lib/clang/${lib.getVersion llvmPackages.clang}/include";
-
   meta = with lib; {
     description = "Reference client for NEAR Protocol";
     homepage = "https://github.com/near/nearcore";

pkgs/applications/blockchains/polkadot/default.nix

@@ -36,14 +36,13 @@ rustPlatform.buildRustPackage rec {
 
   buildInputs = lib.optionals stdenv.isDarwin [ Security ];
 
-  nativeBuildInputs = [ clang ];
+  nativeBuildInputs = [ rustPlatform.bindgenHook ];
 
   preBuild = ''
     export SUBSTRATE_CLI_GIT_COMMIT_HASH=$(cat .git_commit)
     rm .git_commit
   '';
 
-  LIBCLANG_PATH = "${llvmPackages.libclang.lib}/lib";
   PROTOC = "${protobuf}/bin/protoc";
 
   # NOTE: We don't build the WASM runtimes since this would require a more

pkgs/applications/blockchains/snarkos/default.nix

@@ -23,15 +23,13 @@ rustPlatform.buildRustPackage rec {
 
   # buildAndTestSubdir = "cli";
 
-  nativeBuildInputs = lib.optionals stdenv.isLinux [ pkg-config llvmPackages.clang ];
+  nativeBuildInputs = lib.optionals stdenv.isLinux [ pkg-config rustPlatform.bindgenHook ];
 
   # Needed to get openssl-sys to use pkg-config.
   OPENSSL_NO_VENDOR = 1;
   OPENSSL_LIB_DIR = "${lib.getLib openssl}/lib";
   OPENSSL_DIR="${lib.getDev openssl}";
 
-  LIBCLANG_PATH="${llvmPackages.libclang.lib}/lib";
-
   # TODO check why rust compilation fails by including the rocksdb from nixpkgs
   # Used by build.rs in the rocksdb-sys crate. If we don't set these, it would
   # try to build RocksDB from source.

pkgs/applications/blockchains/solana-validator/default.nix

@@ -68,12 +68,9 @@ rustPlatform.buildRustPackage rec {
   cargoBuildFlags = builtins.map (n: "--bin=${n}") solanaPkgs;
 
   # weird errors. see https://github.com/NixOS/nixpkgs/issues/52447#issuecomment-852079285
-  LIBCLANG_PATH = "${libclang.lib}/lib";
-  BINDGEN_EXTRA_CLANG_ARGS =
-    "-isystem ${libclang.lib}/lib/clang/${lib.getVersion clang}/include";
-  LLVM_CONFIG_PATH = "${llvm}/bin/llvm-config";
+  # LLVM_CONFIG_PATH = "${llvm}/bin/llvm-config";
 
-  nativeBuildInputs = [ clang llvm pkg-config protobuf rustfmt perl ];
+  nativeBuildInputs = [ pkg-config protobuf rustfmt perl rustPlatform.bindgenHook ];
   buildInputs =
     [ openssl zlib libclang hidapi ] ++ (lib.optionals stdenv.isLinux [ udev ]);
   strictDeps = true;

pkgs/applications/blockchains/teos/default.nix

@@ -38,11 +38,8 @@ let
     perl  # used by openssl-sys to configure
     protobuf
     rustfmt
-    llvmPackages.clang
+    rustPlatform.bindgenHook
   ];
-
-
-  LIBCLANG_PATH = "${llvmPackages.libclang.lib}/lib";
 in
 {
   teos = rustPlatform.buildRustPackage {
@@ -50,7 +47,7 @@ in
     cargoSha256 = "sha256-7VYYYSMJ2JP1KuA8sD0X3wInubH/jbA/sgzsTsomyEc=";
     buildAndTestSubdir = "teos";
 
-    inherit version src cargoPatches buildInputs nativeBuildInputs LIBCLANG_PATH;
+    inherit version src cargoPatches buildInputs nativeBuildInputs;
 
     meta = common.meta // {
       description = "A Lightning watchtower compliant with BOLT13, written in Rust";
@@ -66,7 +63,7 @@ in
     cargoSha256 = "sha256-xL+DiEfgBYJQ1UJm7LAr1/f34pkU8FRl4Seic8MFAlM=";
     buildAndTestSubdir = "watchtower-plugin";
 
-    inherit version src cargoPatches buildInputs nativeBuildInputs LIBCLANG_PATH;
+    inherit version src cargoPatches buildInputs nativeBuildInputs;
 
     meta = common.meta // {
       description = "A Lightning watchtower plugin for clightning";

pkgs/applications/editors/emacs/elisp-packages/manual-packages/tsc/default.nix

@@ -43,13 +43,9 @@ let
 
     pname = "tsc-dyn";
 
-    nativeBuildInputs = [ clang ];
+    nativeBuildInputs = [ rustPlatform.bindgenHook ];
     sourceRoot = "source/core";
 
-    configurePhase = ''
-      export LIBCLANG_PATH="${llvmPackages.libclang.lib}/lib"
-    '';
-
     postInstall = ''
       LIB=($out/lib/libtsc_dyn.*)
       TSC_PATH=$out/share/emacs/site-lisp/elpa/tsc-${version}

pkgs/applications/misc/authenticator/default.nix

@@ -42,7 +42,6 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [
     appstream-glib
-    clang
     desktop-file-utils
     meson
     ninja
@@ -52,6 +51,7 @@ stdenv.mkDerivation rec {
     cargoSetupHook
     rust.cargo
     rust.rustc
+    bindgenHook
   ]);
 
   buildInputs = [
@@ -69,8 +69,6 @@ stdenv.mkDerivation rec {
     zbar
   ];
 
-  LIBCLANG_PATH = "${lib.getLib libclang}/lib";
-
   meta = {
     description = "Two-factor authentication code generator for GNOME";
     homepage = "https://gitlab.gnome.org/World/Authenticator";

pkgs/applications/misc/clipcat/default.nix

@@ -14,8 +14,6 @@ rustPlatform.buildRustPackage rec {
 
   cargoSha256 = "1n4il3l59m2a6ca54vfaivzg25abf8s4w5kpd5q51p13624iz0kb";
 
-  LIBCLANG_PATH = "${llvmPackages.libclang.lib}/lib";
-
   # needed for internal protobuf c wrapper library
   PROTOC = "${protobuf}/bin/protoc";
   PROTOC_INCLUDE = "${protobuf}/include";
@@ -23,8 +21,7 @@ rustPlatform.buildRustPackage rec {
   nativeBuildInputs = [
     pkg-config
 
-    clang
-    llvmPackages.libclang
+    rustPlatform.bindgenHook
 
     rustfmt
     protobuf

pkgs/applications/misc/imag/default.nix

@@ -21,13 +21,11 @@ rustPlatform.buildRustPackage rec {
     sha256 = "0f9915f083z5qqcxyavj0w6m973c8m1x7kfb89pah5agryy5mkaq";
   };
 
-  nativeBuildInputs = [ installShellFiles pkg-config ];
+  nativeBuildInputs = [ installShellFiles pkg-config rustPlatform.bindgenHook ];
   buildInputs = [ openssl ]
     ++ lib.optional stdenv.isDarwin Security;
   checkInputs = [ gitMinimal util-linuxMinimal ];
 
-  LIBCLANG_PATH = "${llvmPackages.libclang.lib}/lib";
-
   cargoSha256 = "1vnrc72g2271i2p847z30kplxmdpi60n3dzpw0s7dahg33g14ai6";
 
   checkPhase = ''