fish: replace pure prompt with lighter own prompt

modules/shell.nix

@@ -29,8 +29,6 @@
 
     ffmpeg
     imagemagick
-  ] ++ lib.optionals config.programs.fish.enable [
-    pkgs.fishPlugins.pure
   ] ++ lib.optionals pkgs.stdenv.isLinux [ pkgs.trash-cli ];
 
   programs.tmux.enable = true;

stow/.config/fish/.gitignore

@@ -1,2 +1 @@
 fish_variables
-pure_prompt_colours

stow/.config/fish/config.fish

@@ -1,31 +1,75 @@
 if status is-interactive
   # Commands to run in interactive sessions can go here
 
+
+  #
+  # shell prompt 
+  #
+
   # match prompt symbol to OS logo
-  if test -e /System
+  if test -e /etc/os-release
-    set pure_symbol_prompt ""
-    eval "$(/opt/homebrew/bin/brew shellenv)"
-  else
     posix-source /etc/os-release
-    if [ "$ID" = "nixos" ]
-      set pure_symbol_prompt ""
-    else if [ "$ID" = "debian" ]
-      set pure_symbol_prompt ""
-    else if [ "$ID" = "fedora" ]
-      set pure_symbol_prompt ""
-    else if [ "$ID" = "arch" ]
-      set pure_symbol_prompt "󰣇"
-    end
   end
 
-  cat ~/.config/fish/pure_colours.fish | source
+  if test -e /System
+    set os_icon ""
+    eval "$(/opt/homebrew/bin/brew shellenv)"
+  else if [ "$ID" = "nixos" ]
+    set os_icon ""
+  else if [ "$ID" = "debian" ]
+    set os_icon ""
+  else if [ "$ID" = "fedora" ]
+    set os_icon ""
+  else if [ "$ID" = "arch" ]
+    set os_icon "󰣇"
+  else
+    set os_icon "\$"
+  end
+
+  # set prompt colours
+  if test -e ~/.cache/zsh_colours.sh
+    posix-source (string replace -fra "{|}|#|\"" "" (cat ~/.cache/zsh_colours.sh) | psub)
+  else
+    set PRIMARY_COLOUR  blue
+    set SECONDARY_COLOUR purple
+  end
+
+
+  # construct final prompt
+  function fish_prompt
+    # turn os_icon red if an error occurs
+    set -l prompt_icon
+    if test $status -ne 0
+      set prompt_icon (set_color red)"$os_icon"(set_color normal)
+    else
+      set prompt_icon "$os_icon"
+    end
+
+    # set ssh status
+    set -l ssh_status
+    if set -q SSH_CONNECTION
+      set ssh_status (prompt_login)
+    end
+
+    # concatenate $HOME to a ~ eg. /home/user to ~
+    set shorten_path (string replace -r "^$HOME" "~" "$PWD")
+
+    echo (set_color $PRIMARY_COLOUR)$shorten_path $ssh_status (set_color $SECONDARY_COLOUR)$prompt_icon (set_color normal) 
+  end
+
+  #
+  # shell intergration
+  #
 
-  set pure_enable_single_line_prompt true
-  set HOMEBREW_AUTO_UPDATE_SECS 86400
   zoxide init fish | source
 
+  #
   # environment variables
+  #
+
   set -gx EDITOR nvim
+  set fish_greeting ""
+  set HOMEBREW_AUTO_UPDATE_SECS 86400
 
   # xdg variables
   set -gx XDG_CONFIG_HOME "$HOME/.config"      # config

stow/.config/matugen/config.toml

@@ -64,11 +64,6 @@ post_hook = 'sh ~/.cache/matugen-jankyborders.sh & disown'
 input_path = './templates/zsh.sh'
 output_path = '~/.cache/zsh_colours.sh'
 
-[templates.fish-pure]
-input_path = './templates/pure.fish'
-output_path = '~/.config/fish/pure_colours.fish'
-post_hook = 'fish ~/.config/fish/pure_colours.fish'
-
 [templates.fuzzel]
 input_path = './templates/fuzzel.ini'
 output_path = '~/.config/fuzzel/colors.ini'

stow/.config/matugen/templates/pure.fish

@@ -1,15 +0,0 @@
-set pure_color_primary {{colors.primary.default.hex_stripped}}
-set pure_color_normal {{colors.on_primary.default.hex_stripped}}
-set pure_color_success {{colors.on_primary_container.default.hex_stripped}}
-set pure_color_warning {{colors.secondary_fixed_dim.default.hex_stripped}}
-
-set pure_color_info {{colors.secondary.default.hex_stripped}}
-set pure_color_danger {{colors.error.default.hex_stripped}}
-set pure_color_mute {{colors.surface_bright.default.hex_stripped}}
-
-set pure_color_light {{colors.secondary.default.hex_stripped}}
-set pure_color_dark {{colors.secondary.default.hex_stripped}}
-
-set pure_color_git_unpushed_commits {{colors.tertiary.default.hex_stripped}}
-set pure_color_git_dirty {{colors.tertiary.default.hex_stripped}}
-set pure_color_git_stash {{colors.tertiary.default.hex_stripped}}