roy config files in place, ready to rumble

nixos/roy-config/fish/config.fish

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+if status is-interactive
+    # Commands to run in interactive sessions can go here
+end

nixos/roy-config/fish/fish_variables

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+# This file contains fish universal variable definitions.
+# VERSION: 3.0
+SETUVAR __fish_initialized:3800
+SETUVAR fish_color_autosuggestion:brblack
+SETUVAR fish_color_cancel:\x2dr
+SETUVAR fish_color_command:normal
+SETUVAR fish_color_comment:red
+SETUVAR fish_color_cwd:green
+SETUVAR fish_color_cwd_root:red
+SETUVAR fish_color_end:green
+SETUVAR fish_color_error:brred
+SETUVAR fish_color_escape:brcyan
+SETUVAR fish_color_history_current:\x2d\x2dbold
+SETUVAR fish_color_host:normal
+SETUVAR fish_color_host_remote:yellow
+SETUVAR fish_color_normal:normal
+SETUVAR fish_color_operator:brcyan
+SETUVAR fish_color_param:cyan
+SETUVAR fish_color_quote:yellow
+SETUVAR fish_color_redirection:cyan\x1e\x2d\x2dbold
+SETUVAR fish_color_search_match:white\x1e\x2d\x2dbackground\x3dbrblack
+SETUVAR fish_color_selection:white\x1e\x2d\x2dbold\x1e\x2d\x2dbackground\x3dbrblack
+SETUVAR fish_color_status:red
+SETUVAR fish_color_user:brgreen
+SETUVAR fish_color_valid_path:\x2d\x2dunderline
+SETUVAR fish_key_bindings:fish_default_key_bindings
+SETUVAR fish_pager_color_completion:normal
+SETUVAR fish_pager_color_description:yellow\x1e\x2di
+SETUVAR fish_pager_color_prefix:normal\x1e\x2d\x2dbold\x1e\x2d\x2dunderline
+SETUVAR fish_pager_color_progress:brwhite\x1e\x2d\x2dbackground\x3dcyan
+SETUVAR fish_pager_color_selected_background:\x2dr
+SETUVAR fish_prompt_pwd_dir_length:100

nixos/roy-config/fish/functions/fish_greeting.fish

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+function fish_greeting
+  # echo (set_color yellow)(date +%T)
+end

nixos/roy-config/fish/functions/fish_prompt.fish

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+function fish_prompt --description 'Write out the prompt'
+    set -l last_pipestatus $pipestatus
+    set -lx __fish_last_status $status # Export for __fish_print_pipestatus.
+    set -l normal (set_color normal)
+    set -q fish_color_status
+    or set -g fish_color_status red
+
+    # Color the prompt differently when we're root
+    set -l color_cwd $fish_color_cwd
+    set -l suffix '>'
+    if functions -q fish_is_root_user; and fish_is_root_user
+        if set -q fish_color_cwd_root
+            set color_cwd $fish_color_cwd_root
+        end
+        set suffix '#'
+    end
+
+    # Write pipestatus
+    # If the status was carried over (if no command is issued or if `set` leaves the status untouched), don't bold it.
+    set -l bold_flag --bold
+    set -q __fish_prompt_status_generation; or set -g __fish_prompt_status_generation $status_generation
+    if test $__fish_prompt_status_generation = $status_generation
+        set bold_flag
+    end
+    set __fish_prompt_status_generation $status_generation
+    set -l status_color (set_color $fish_color_status)
+    set -l statusb_color (set_color $bold_flag $fish_color_status)
+    set -l prompt_status (__fish_print_pipestatus "[" "]" "|" "$status_color" "$statusb_color" $last_pipestatus)
+
+    echo -n -s (prompt_login)' ' (set_color $color_cwd) (prompt_pwd) $normal (fish_vcs_prompt) $normal " "$prompt_status $suffix " "
+end
+
+function prompt_pwd --description 'short CWD for the prompt'
+    set -l options h/help d/dir-length= D/full-length-dirs=
+    argparse -n prompt_pwd $options -- $argv
+    or return
+
+    if set -q _flag_help
+        __fish_print_help prompt_pwd
+        return 0
+    end
+
+    set -q argv[1]
+    or set argv $PWD
+
+    set -ql _flag_d
+    and set -l fish_prompt_pwd_dir_length $_flag_d
+
+    set -q fish_prompt_pwd_dir_length
+    or set -l fish_prompt_pwd_dir_length 1
+
+    set -l fulldirs 0
+    set -ql _flag_D
+    and set -l fish_prompt_pwd_full_dirs $_flag_D
+
+    set -q fish_prompt_pwd_full_dirs
+    or set -l fish_prompt_pwd_full_dirs 1
+
+    for path in $argv
+        # Replace $HOME with "~"
+        set -l realhome (string escape --style=regex -- ~)
+        set -l tmp (string replace -r '^'"$realhome"'($|/)' '~$1' $path)
+
+        if test "$fish_prompt_pwd_dir_length" -eq 0
+            echo $tmp
+        else
+            # Shorten to at most $fish_prompt_pwd_dir_length characters per directory
+            # with full-length-dirs components left at full length.
+            set -l full
+            if test $fish_prompt_pwd_full_dirs -gt 0
+                set -l all (string split -m (math $fish_prompt_pwd_full_dirs - 1) -r / $tmp)
+                set tmp $all[1]
+                set full $all[2..]
+            else if test $fish_prompt_pwd_full_dirs -eq 0
+                # 0 means not even the last component is kept
+                string replace -ar '(\.?[^/]{'"$fish_prompt_pwd_dir_length"'})[^/]*' '$1' $tmp
+                continue
+            end
+
+            string join / -- (string replace -ar -- '(\.?[^/]{'"$fish_prompt_pwd_dir_length"'})[^/]*/' '$1/' $tmp) $full
+        end
+    end
+end