Prioritise direnv from nixpkgs over asdf-installed version

Fixes syntax errors when using `use flake`, see also
NixOS/nixpkgs#296936
NixOS/nix#10263
direnv/direnv#1256

.config/zsh/.zshrc

@@ -45,9 +45,6 @@ setopt appendhistory
 mkdir -p $(dirname $HISTFILE)
 touch $HISTFILE
 
-# Let direnv hook into zsh. Used especially for nix
-eval "$(direnv hook zsh)"
-
 # Enable thefuck alias
 eval $(thefuck --alias)
 
@@ -94,5 +91,8 @@ export ASDF_NODEJS_LEGACY_FILE_DYNAMIC_STRATEGY=latest_available
 # Install some npm packages by default with asdf nodejs
 export ASDF_NPM_DEFAULT_PACKAGES_FILE=$HOME/.config/asdf-default-npm-packages
 
+# Let direnv hook into zsh. Used especially for nix
+eval "$(direnv hook zsh)"
+
 # ZSH syntax highlighting. This should be sourced last!
 source $HOME/.nix-profile/share/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh