diff --git a/flake.nix b/flake.nix
index 6963038c..505cc63a 100644
--- a/flake.nix
+++ b/flake.nix
@@ -144,9 +144,6 @@
           inputs.guix-overlay.nixosModules.guix
         ];
 
-        # Bleeding edge, baybee!
-        nix.package = lib.mkDefault pkgs.nixUnstable;
-
         # I want to capture the usual flakes to its exact version so we're
         # making them available to our system. This will also prevent the
         # annoying downloads since it always get the latest revision.
diff --git a/modules/nixos/profiles/system.nix b/modules/nixos/profiles/system.nix
index 1204cb9f..ec3b1a9f 100644
--- a/modules/nixos/profiles/system.nix
+++ b/modules/nixos/profiles/system.nix
@@ -161,10 +161,7 @@ in {
       hardware.opentabletdriver.enable = true;
 
       # Enable support for Bluetooth.
-      hardware.bluetooth = {
-        enable = true;
-        package = pkgs.bluezFull;
-      };
+      hardware.bluetooth.enable = true;
     })
 
     (lib.mkIf cfg.cleanup.enable {
diff --git a/pkgs/software-heritage/swh-model.nix b/pkgs/software-heritage/swh-model.nix
index 3a115a05..7cd2dd03 100644
--- a/pkgs/software-heritage/swh-model.nix
+++ b/pkgs/software-heritage/swh-model.nix
@@ -19,7 +19,7 @@ buildPythonPackage rec {
     typing-extensions
     hypothesis
     iso8601
-    dateutil
+    python-dateutil
     attrs
     attrs-strict
 
diff --git a/pkgs/software-heritage/swh-web-client.nix b/pkgs/software-heritage/swh-web-client.nix
index 9048a8e4..06158ccf 100644
--- a/pkgs/software-heritage/swh-web-client.nix
+++ b/pkgs/software-heritage/swh-web-client.nix
@@ -13,7 +13,7 @@ buildPythonPackage rec {
 
   doCheck = false;
   propagatedBuildInputs = [
-    dateutil
+    python-dateutil
     click
     requests
 
diff --git a/pkgs/tic-80/default.nix b/pkgs/tic-80/default.nix
index eab46473..e4c7f755 100644
--- a/pkgs/tic-80/default.nix
+++ b/pkgs/tic-80/default.nix
@@ -13,7 +13,7 @@
 , libglvnd
 , mesa
 , SDL2
-, pkgconfig
+, pkg-config
 , valgrind
 , sndio
 , libsamplerate
@@ -54,7 +54,7 @@ stdenv.mkDerivation rec {
     substituteInPlace CMakeLists.txt --replace '@mruby@' "${mruby}"
   '';
 
-  nativeBuildInputs = [ cmake pkgconfig ];
+  nativeBuildInputs = [ cmake pkg-config ];
   buildInputs = [
     alsaLib
     freeglut
diff --git a/shells/rust.nix b/shells/rust.nix
index e8049cab..e612fad8 100644
--- a/shells/rust.nix
+++ b/shells/rust.nix
@@ -2,7 +2,7 @@
 # to use the `rust` template from `nixpkgs` or whatever you prefer.
 { mkShell
 , openssl
-, pkgconfig
+, pkg-config
 , cargo
 , rustc
 , rustfmt
@@ -14,7 +14,7 @@
 mkShell {
   buildInputs = [
     openssl # In case some package needs it.
-    pkgconfig # In case some other package needs it.
+    pkg-config # In case some other package needs it.
 
     # Rust platform.
     cargo