zsh: Make nix-shell pretty and update ps1

users/hu/packages/zsh/config/conf.d/alias.zsh

@@ -2,3 +2,7 @@
 
 alias reload="exec zsh"
 
+if [ -x "$(command -v nix)" ]; then
+    alias nix-develop="nix develop -c $SHELL"
+fi
+

users/hu/packages/zsh/config/conf.d/completions.zsh

@@ -1,17 +1,17 @@
 #!/usr/bin/env zsh
 
-if [ -z "$FZF_TAB_FILE" ]; then
+if [ -z "$FZF_TAB_PLUGIN" ]; then
     if [ ! -d "$HOME/.cache/fzf-tab" ]; then
         echo "Installing fzf-tab"
         git clone "https://github.com/Aloxaf/fzf-tab" "$HOME/.cache/fzf-tab" 
     fi
-    FZF_TAB_FILE="$HOME/.cache/fzf-tab/fzf-tab.plugin.zsh"
+    FZF_TAB_PLUGIN="$HOME/.cache/fzf-tab/fzf-tab.plugin.zsh"
 fi
 
 autoload -Uz compinit
 compinit
 
-source "$FZF_TAB_FILE"
+source "$FZF_TAB_PLUGIN"
 zstyle ':completion:*:git-checkout:*' sort false
 
 if [ -n "$TMUX" ]; then

users/hu/packages/zsh/config/conf.d/nix.zsh

@@ -0,0 +1,7 @@
+#!/usr/bin/env zsh
+
+# Nix specific zsh configuration
+if [ -x "$(command -v nix)" ]; then
+      source "$NIX_SHELL_PLUGIN"
+fi
+

users/hu/packages/zsh/config/conf.d/ps1.zsh

@@ -9,10 +9,21 @@ case "$distro" in
     *) dicon="%F{yellow}[󰘧]%f" ;;
 esac
 
+if [ -n "$IN_NIX_SHELL" ]; then
+    if [ -z "$NIX_SHELL_PACKAGES" ]; then
+        nix_shell_ps1="%F{red}nix-shell%f"
+    else
+        nix_shell_ps1="%F{red}{ $NIX_SHELL_PACKAGES }%f"
+    fi
+else
+    nix_shell_ps1=""
+fi
+
 setopt prompt_subst
 autoload -Uz vcs_info
 precmd () { vcs_info }
-zstyle ':vcs_info:*' formats ' %F{yellow}(%b)%f'
+zstyle ':vcs_info:*' formats ' %F{yellow}(%b)%f '
 
-export PS1='$dicon %n@%m %F{green}%~%f$vcs_info_msg_0_> '
+NL=$'\n'
+export PS1='%F{green}%~%f$vcs_info_msg_0_$nix_shell_ps1$NL$dicon > '
 

users/hu/packages/zsh/config/conf.d/suggestions.zsh

@@ -9,10 +9,10 @@ setopt SHARE_HISTORY
 setopt HIST_IGNORE_SPACE
 setopt HIST_SAVE_NO_DUPS
 
-if [ -z "$AUTOSUGGEST_FILE" ]; then
+if [ -z "$AUTOSUGGEST_PLUGIN" ]; then
   import_file="/usr/share/zsh-autosuggestions/zsh-autosuggestions.zsh"
 else
-  import_file="$AUTOSUGGEST_FILE"
+  import_file="$AUTOSUGGEST_PLUGIN"
 fi
 
 if [ ! -f "$import_file" ]; then

users/hu/packages/zsh/config/conf.d/syntax.zsh

@@ -1,9 +1,9 @@
 #!/usr/bin/env zsh
 
-if [ -z "$SYNTAX_FILE" ]; then
+if [ -z "$SYNTAX_PLUGIN" ]; then
   import_file="/usr/share/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh"
 else
-  import_file="$SYNTAX_FILE"
+  import_file="$SYNTAX_PLUGIN"
 fi
 
 if [ ! -f "$import_file" ]; then