function fish_prompt
    set -l user $USER
    set -l cwd $PWD
    set -l home $HOME
    set -l pr_prefix ""
    set -l at_sym "∈"
    set -l on_sym "⊢"
    set -l prompt_sym "λ"
    set -l root_dir_sym ""
    # git integration
    set -l branch_sym ""
    set -l branch ""
    set -l in_git false
    set -l detached false
    
    if test "$user" = "root"
        set prompt_sym "#"
    end

    if test "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = true
        set in_git true
    end

    if test "$in_git" = true
        if git status --porcelain=2 --branch | string match -q "*detached*"
            set detached true
        end
    end 

    if test "$in_git" = true; and test "$detached" = true
        set on_sym "⊬"
    end

    if test "$in_git" = true
        set branch (git branch --show-current 2>/dev/null); or set branch (git rev-parse --short HEAD 2>/dev/null)
        set branch "$branch_sym"(set_color red)"$branch"
    end


    if test "$cwd" = "$home"
        set colored "~"
        echo -e (set_color white)"$pr_prefix"(set_color red)"$user"(set_color white)" $at_sym "(set_color red)"$colored"(set_color white)"\n"\
                (set_color white)"$prompt_sym "(set_color normal)

    else if string match -q "$home/*" $cwd
        set -l relative (string replace "$home/" (set_color red)"~/" $cwd)
        set -l parts (string split "/" $relative)
        set -l colored ""

        for p in $parts
            if test -n "$p"
                set colored $colored(set_color white)$p(set_color red)"/"
            end
        end

        set colored (string trim -r -c "/" $colored)

		# if in a ~ subdir
        if test "$in_git" = true
            echo -e (set_color white)"$pr_prefix"(set_color red)"$user"(set_color white)" $at_sym "(set_color red)"$colored"\
                    (set_color white)"$on_sym ""$branch"(set_color white)"\n" \
                    (set_color white)"$prompt_sym "(set_color normal)
        else
            echo -e (set_color white)"$pr_prefix"(set_color red)"$user"(set_color white)" $at_sym "(set_color red)"$colored"(set_color white)"\n"\
                    (set_color white)"$prompt_sym "(set_color normal)
        end
    else
        set -l parts (string split "/" $cwd)
        set -l colored ""

        for p in $parts
            if test -n "$p"
                set colored $colored(set_color white)$p(set_color red)"/"
            end
        end

        set colored (string trim -r -c "/" $colored)
        set colored (set_color red)"$root_dir_sym""$colored"
		# if in any other dir
        if test "$in_git" = true
            echo -e (set_color white)"$pr_prefix"(set_color red)"$user"(set_color white)" $at_sym "(set_color red)"$colored"\
                    (set_color white)"$on_sym ""$branch"(set_color white)"\n" \
                    (set_color white)"$prompt_sym "(set_color normal)
        else
            echo -e (set_color white)"$pr_prefix"(set_color red)"$user"(set_color white)" $at_sym "(set_color red)"$colored"(set_color white)"\n"\
                    (set_color white)"$prompt_sym "(set_color normal)
        end
    end
end