diff --git a/package.accept_keywords/cuda b/package.accept_keywords/cuda
new file mode 100644
index 0000000..57b299a
--- /dev/null
+++ b/package.accept_keywords/cuda
@@ -0,0 +1,2 @@
+dev-util/nvidia-cuda-toolkit ~amd64
+=x11-drivers/nvidia-drivers-535.86.05 ~amd64
diff --git a/package.accept_keywords/ruff b/package.accept_keywords/ruff
index bbe80a3..4224574 100644
--- a/package.accept_keywords/ruff
+++ b/package.accept_keywords/ruff
@@ -1 +1 @@
-=dev-util/ruff-0.0.270 ~amd64
+dev-util/ruff ~amd64
diff --git a/package.env/ccache b/package.env/ccache
index c7051aa..400a955 100644
--- a/package.env/ccache
+++ b/package.env/ccache
@@ -1,6 +1,8 @@
 sys-devel/clang ccache
 sys-devel/llvm ccache
 
+sys-devel/gcc
+
 media-libs/mesa ccache
 
 www-client/firefox ccache
diff --git a/package.env/clang b/package.env/clang
deleted file mode 100644
index 70d5a95..0000000
--- a/package.env/clang
+++ /dev/null
@@ -1,16 +0,0 @@
-# sys-devel/llvm clang lto mold
-# sys-libs/libcxx clang lto mold
-# sys-libs/libcxxabi clang lto mold
-# sys-libs/compiler-rt clang lto mold
-# sys-libs/compiler-rt-sanitizers clang lto mold
-# sys-libs/llvm-libunwind clang lto mold
-# sys-devel/lld clang lto mold
-# sys-devel/clang clang lto mold
-# 
-# sys-devel/mold clang lto mold
-# 
-# dev-lang/rust clang lto mold
-# 
-=www-client/firefox-116.0 clang lto lld
-# 
-# dev-python/pyzmq clang mold
diff --git a/package.env/ghc b/package.env/ghc
new file mode 100644
index 0000000..9f1ece8
--- /dev/null
+++ b/package.env/ghc
@@ -0,0 +1,2 @@
+dev-lang/ghc gcc mold
+app-admin/haskell-updater gcc lto mold
diff --git a/package.env/qt b/package.env/qt
new file mode 100644
index 0000000..9f975e2
--- /dev/null
+++ b/package.env/qt
@@ -0,0 +1 @@
+dev-qt/qtcore clang mold
diff --git a/package.env/gcc b/package.env/sys-gcc
similarity index 100%
rename from package.env/gcc
rename to package.env/sys-gcc
diff --git a/package.license b/package.license
index 2af924e..a11a0d7 100644
--- a/package.license
+++ b/package.license
@@ -1,6 +1,7 @@
 sys-kernel/linux-firmware @BINARY-REDISTRIBUTABLE
 
 x11-drivers/nvidia-drivers NVIDIA-r2
+dev-util/nvidia-cuda-toolkit NVIDIA-CUDA
 
 net-im/discord all-rights-reserved
 
diff --git a/package.use/firefox b/package.use/firefox
index 0939f1f..a9a6f0a 100644
--- a/package.use/firefox
+++ b/package.use/firefox
@@ -1,3 +1,5 @@
+www-client/firefox hwaccel openh264
+
 # required by www-client/firefox-102.13.0::gentoo[system-libvpx]
 # required by firefox (argument)
 media-libs/libvpx postproc
diff --git a/package.use/ghc b/package.use/ghc
new file mode 100644
index 0000000..783115c
--- /dev/null
+++ b/package.use/ghc
@@ -0,0 +1 @@
+dev-lang/ghc -doc
diff --git a/package.use/graphviz b/package.use/graphviz
new file mode 100644
index 0000000..313bba4
--- /dev/null
+++ b/package.use/graphviz
@@ -0,0 +1,3 @@
+# required by media-gfx/graphviz-8.0.5::gentoo
+# required by media-gfx/graphviz (argument)
+>=media-libs/gd-2.3.3-r3 fontconfig
diff --git a/package.use/nvidia-cuda-toolkit b/package.use/nvidia-cuda-toolkit
new file mode 100644
index 0000000..98a7e51
--- /dev/null
+++ b/package.use/nvidia-cuda-toolkit
@@ -0,0 +1 @@
+dev-util/nvidia-cuda-toolkit examples profiler