meowmeow

modules/fish/fish_prompt.fish

@@ -0,0 +1,91 @@
+# name: Disco
+# author: Fabian Homborg
+
+function fish_prompt
+    set -l last_status $status
+
+    set -l normal (set_color normal)
+    set -l usercolor (set_color $fish_color_user)
+
+    set -l delim \U25BA
+    # If we don't have unicode use a simpler delimiter
+    string match -qi "*.utf-8" -- $LANG $LC_CTYPE $LC_ALL; or set delim ">"
+
+    fish_is_root_user; and set delim "#"
+
+    set -l cwd (set_color $fish_color_cwd)
+    if command -sq cksum
+        # randomized cwd color
+        # We hash the physical PWD and turn that into a color. That means directories (usually) get different colors,
+        # but every directory always gets the same color. It's deterministic.
+        # We use cksum because 1. it's fast, 2. it's in POSIX, so it should be available everywhere.
+        set -l shas (pwd -P | cksum | string split -f1 ' ' | math --base=hex | string sub -s 3 | string pad -c 0 -w 6 | string match -ra ..)
+        set -l col 0x$shas[1..3]
+
+        # If the (simplified idea of) luminance is below 120 (out of 255), add some more.
+        # (this runs at most twice because we add 60)
+        while test (math 0.2126 x $col[1] + 0.7152 x $col[2] + 0.0722 x $col[3]) -lt 120
+            set col[1] (math --base=hex "min(255, $col[1] + 60)")
+            set col[2] (math --base=hex "min(255, $col[2] + 60)")
+            set col[3] (math --base=hex "min(255, $col[3] + 60)")
+        end
+        set -l col (string replace 0x '' $col | string pad -c 0 -w 2 | string join "")
+
+        set cwd (set_color $col)
+    end
+
+    # Prompt status only if it's not 0
+    set -l prompt_status
+    test $last_status -ne 0; and set prompt_status (set_color $fish_color_status)"[$last_status]$normal"
+
+    # Only show host if in SSH or container
+    # Store this in a global variable because it's slow and unchanging
+    if not set -q prompt_host
+        set -g prompt_host ""
+        if set -q SSH_TTY
+            or begin
+                command -sq systemd-detect-virt
+                and systemd-detect-virt -q
+            end
+            set prompt_host $usercolor$USER$normal@(set_color $fish_color_host)$hostname$normal":"
+        end
+    end
+
+    # Shorten pwd if prompt is too long
+    set -l pwd (prompt_pwd)
+
+    echo -n -s $prompt_host $cwd $pwd $normal $prompt_status $delim
+end
+
+function fish_right_prompt
+    set -g __fish_git_prompt_showdirtystate 1
+    set -g __fish_git_prompt_showuntrackedfiles 1
+    set -g __fish_git_prompt_showupstream informative
+    set -g __fish_git_prompt_showcolorhints 1
+    set -g __fish_git_prompt_use_informative_chars 1
+    # Unfortunately this only works if we have a sensible locale
+    string match -qi "*.utf-8" -- $LANG $LC_CTYPE $LC_ALL
+    and set -g __fish_git_prompt_char_dirtystate \U1F4a9
+    set -g __fish_git_prompt_char_untrackedfiles "?"
+
+    # The git prompt's default format is ' (%s)'.
+    # We don't want the leading space.
+    set -l vcs (fish_vcs_prompt '(%s)' 2>/dev/null)
+
+    set -l d (set_color brgrey)(date "+%R")(set_color normal)
+
+    set -l duration "$cmd_duration$CMD_DURATION"
+    if test $duration -gt 100
+        set duration (math $duration / 1000)s
+    else
+        set duration
+    end
+
+    set -q VIRTUAL_ENV_DISABLE_PROMPT
+    or set -g VIRTUAL_ENV_DISABLE_PROMPT true
+    set -q VIRTUAL_ENV
+    and set -l venv (string replace -r '.*/' '' -- "$VIRTUAL_ENV")
+
+    set_color normal
+    string join " " -- $venv $duration $vcs $d
+end

modules/users/sammy.nix

@@ -34,6 +34,14 @@
 
     fish = {
       enable = true;
+      functions = {};
+    };
+  };
+
+  home.file = {
+    fish_prompt = {
+      source = ../fish/fish_prompt.fish;
+      target = ".config/fish/functions/fish_prompt.fish";
     };
   };