Remove pyenv and add new shell theme

I enjoyed bobthefish quite a bit, but the nerd fonts on the CLI were
screwing up Emacs, and that's a non-starter for me.

One thing I like about cmorrell is that it has the host in the terminal
line, so I can tell which machine I'm on.

config/fish/functions/fish_right_prompt.fish

@@ -1,70 +1,29 @@
-# You can override some default right prompt options in your config.fish:
-#     set -g theme_date_format "+%a %H:%M"
 
-function __bobthefish_cmd_duration -S -d 'Show command duration'
-  [ "$theme_display_cmd_duration" = "no" ]; and return
-  [ -z "$CMD_DURATION" -o "$CMD_DURATION" -lt 100 ]; and return
+function get_git_status -d "Gets the current git status"
+  if command git rev-parse --is-inside-work-tree >/dev/null 2>&1
+    set -l dirty (command git status -s --ignore-submodules=dirty | wc -l | sed -e 's/^ *//' -e 's/ *$//' 2> /dev/null)
+    set -l ref (command git describe --tags --exact-match ^/dev/null ; or command git symbolic-ref --short HEAD 2> /dev/null ; or command git rev-parse --short HEAD 2> /dev/null)
 
-  if [ "$CMD_DURATION" -lt 5000 ]
-    echo -ns $CMD_DURATION 'ms'
-  else if [ "$CMD_DURATION" -lt 60000 ]
-    __bobthefish_pretty_ms $CMD_DURATION s
-  else if [ "$CMD_DURATION" -lt 3600000 ]
-    set_color $fish_color_error
-    __bobthefish_pretty_ms $CMD_DURATION m
-  else
-    set_color $fish_color_error
-    __bobthefish_pretty_ms $CMD_DURATION h
-  end
+    if [ "$dirty" != "0" ]
+      set_color -b normal
+      set_color red
+      echo "$dirty changed file"
+      if [ "$dirty" != "1" ]
+        echo "s"
+      end
+      echo " "
+      set_color -b red
+      set_color white
+    else
+      set_color -b cyan
+      set_color white
+    end
 
-  set_color $fish_color_normal
-  set_color $fish_color_autosuggestion
-
-  [ "$theme_display_date" = "no" ]
-    or echo -ns ' ' $__bobthefish_left_arrow_glyph
+    echo " $ref "
+    set_color normal
+   end
 end
 
-function __bobthefish_pretty_ms -S -a ms interval -d 'Millisecond formatting for humans'
-  set -l interval_ms
-  set -l scale 1
-
-  switch $interval
-    case s
-      set interval_ms 1000
-    case m
-      set interval_ms 60000
-    case h
-      set interval_ms 3600000
-      set scale 2
-  end
-
-  switch $FISH_VERSION
-    # Fish 2.3 and lower doesn't know about the -s argument to math.
-    case 2.0.\* 2.1.\* 2.2.\* 2.3.\*
-      math "scale=$scale;$ms/$interval_ms" | string replace -r '\\.?0*$' $interval
-    case \*
-      math -s$scale "$ms/$interval_ms" | string replace -r '\\.?0*$' $interval
-  end
-end
-
-function __bobthefish_timestamp -S -d 'Show the current timestamp'
-  [ "$theme_display_date" = "no" ]; and return
-  set -q theme_date_format
-    or set -l theme_date_format "+%c"
-
-  echo -n ' '
-  date $theme_date_format
-end
-
-function fish_right_prompt -d 'bobthefish is all about the right prompt'
-  set -l __bobthefish_left_arrow_glyph \uE0B3
-  if [ "$theme_powerline_fonts" = "no" ]
-    set __bobthefish_left_arrow_glyph '<'
-  end
-
-  set_color $fish_color_autosuggestion
-
-  __bobthefish_cmd_duration
-  __bobthefish_timestamp
-  set_color normal
-end
+function fish_right_prompt -d "Prints right prompt"
+  get_git_status
+end