Refactor codebase to use nix modules

hmModules/apps/shells/fish/default.nix

@@ -0,0 +1,45 @@
+{ config, pkgs, lib, ... }:
+
+{
+  options.fish = {
+    enable = lib.mkEnableOption "Enables fish";
+  };
+
+  config = lib.mkIf config.fish.enable {
+    programs.fish.enable = true;
+
+    programs.fish.functions = {
+      fish_greeting = "";
+      fish_prompt = ''
+        ${builtins.readFile ./functions/fish_prompt.fish}
+      '';
+      fish_right_prompt = ''
+        ${builtins.readFile ./functions/fish_right_prompt.fish}
+      '';
+      git_branch_name = ''
+        ${builtins.readFile ./functions/git_branch_name.fish}
+      '';
+      git_is_dirty = ''
+        ${builtins.readFile ./functions/git_is_dirty.fish}
+      '';
+      git_is_repo = ''
+        ${builtins.readFile ./functions/git_is_repo.fish}
+      '';
+      git_is_staged = ''
+        ${builtins.readFile ./functions/git_is_staged.fish}
+      '';
+      git_is_touched = ''
+        ${builtins.readFile ./functions/git_is_touched.fish}
+      '';
+      git_is_worktree = ''
+        ${builtins.readFile ./functions/git_is_worktree.fish}
+      '';
+      ssh = ''
+        ${builtins.readFile ./functions/ssh.fish}
+      '';
+      n = lib.mkIf config.nnn.enable ''
+        ${builtins.readFile ./functions/n.fish}
+      '';
+    };
+  };
+}

hmModules/apps/shells/fish/functions/fish_prompt.fish

@@ -0,0 +1,13 @@
+set -l last_command_status $status
+
+set -l symbol 'τ'
+
+set -l normal_color (set_color normal)
+set -l symbol_color (set_color blue -o)
+set -l error_color (set_color red -o)
+
+if test $last_command_status -eq 0
+    echo -n -s $symbol_color $symbol " " $normal_color
+else
+    echo -n -s $error_color $symbol " " $normal_color
+end

hmModules/apps/shells/fish/functions/fish_right_prompt.fish

@@ -0,0 +1,61 @@
+set -l cwd
+set -l cwd_color (set_color blue)
+set -l normal_color (set_color normal)
+set -l branch_color (set_color yellow)
+set -l meta_color (set_color red)
+
+if git_is_repo
+    echo -n -s $branch_color (git_branch_name) $normal_color
+    set -l git_meta ""
+    if test (command git ls-files --others --exclude-standard | wc -w 2> /dev/null) -gt 0
+        set git_meta "$git_meta?"
+    end
+    if test (command git rev-list --walk-reflogs --count refs/stash 2> /dev/null)
+        set git_meta "$git_meta\$"
+    end
+    if git_is_touched
+        git_is_dirty && set git_meta "$git_meta⨯"
+        git_is_staged && set git_meta "$git_meta●"
+    end
+    set -l commit_count (command git rev-list --count --left-right (git remote)/(git_branch_name)"...HEAD" 2> /dev/null)
+    if test $commit_count
+        set -l behind (echo $commit_count | cut -f 1)
+        set -l ahead (echo $commit_count | cut -f 2)
+        if test $behind -gt 0
+            set git_meta "$git_meta🠋"
+        end
+        if test $ahead -gt 0
+            set git_meta "$git_meta🠉"
+        end
+    end
+    if test $git_meta
+        echo -n -s $meta_color " " $git_meta " " $normal_color
+    else
+        echo -n -s " "
+    end
+
+
+    set root_folder (command git rev-parse --show-toplevel 2> /dev/null)
+    set parent_root_folder (dirname $root_folder)
+    set cwd (echo $PWD | sed -e "s|$parent_root_folder/||")
+else
+    set cwd (prompt_pwd)
+end
+
+
+echo -n -s $cwd_color "$cwd"
+set_color --dim
+
+set -l S (math $CMD_DURATION/1000)
+set -l M (math $S/60)
+
+
+echo -n -s " "
+if test $M -gt 1
+    echo -n -s $M m
+else if test $S -gt 1
+    echo -n -s $S s
+else
+    echo -n -s $CMD_DURATION ms
+end
+set_color normal

hmModules/apps/shells/fish/functions/git_branch_name.fish

@@ -0,0 +1,4 @@
+git_is_repo; and begin
+  command git symbolic-ref --short HEAD 2> /dev/null;
+    or command git show-ref --head -s --abbrev | head -n1 2> /dev/null
+end

hmModules/apps/shells/fish/functions/git_is_dirty.fish

@@ -0,0 +1 @@
+git_is_worktree; and not command git diff --no-ext-diff --quiet --exit-code

hmModules/apps/shells/fish/functions/git_is_repo.fish

@@ -0,0 +1,5 @@
+test -d .git
+or begin
+  set -l info (command git rev-parse --git-dir --is-bare-repository 2>/dev/null)
+  and test $info[2] = false
+end

hmModules/apps/shells/fish/functions/git_is_staged.fish

@@ -0,0 +1,3 @@
+git_is_repo; and begin
+  not command git diff --cached --no-ext-diff --quiet --exit-code
+end

hmModules/apps/shells/fish/functions/git_is_touched.fish

@@ -0,0 +1,6 @@
+git_is_worktree; and begin
+  # The first checks for staged changes, the second for unstaged ones.
+  # We put them in this order because checking staged changes is *fast*.
+  not command git diff-index --cached --quiet HEAD -- >/dev/null 2>&1
+  or not command git diff --no-ext-diff --quiet --exit-code >/dev/null 2>&1
+end

hmModules/apps/shells/fish/functions/git_is_worktree.fish

@@ -0,0 +1,2 @@
+git_is_repo
+and test (command git rev-parse --is-inside-git-dir) = false

hmModules/apps/shells/fish/functions/n.fish

@@ -0,0 +1,30 @@
+# Block nesting of nnn in subshells
+if test -n "$NNNLVL"
+    if [ (expr $NNNLVL + 0) -ge 1 ]
+  exit
+        return
+    end
+end
+
+# The default behaviour is to cd on quit (nnn checks if NNN_TMPFILE is set)
+# To cd on quit only on ^G, remove the "-x" as in:
+#    set NNN_TMPFILE "$XDG_CONFIG_HOME/nnn/.lastd"
+# NOTE: NNN_TMPFILE is fixed, should not be modified
+if test -n "$XDG_CONFIG_HOME"
+    set -x NNN_TMPFILE "$XDG_CONFIG_HOME/nnn/.lastd"
+else
+    set -x NNN_TMPFILE "$HOME/.config/nnn/.lastd"
+end
+
+# Unmask ^Q (, ^V etc.) (if required, see `stty -a`) to Quit nnn
+# stty start undef
+# stty stop undef
+# stty lwrap undef
+# stty lnext undef
+
+nnn -T v $argv
+
+if test -e $NNN_TMPFILE
+    source $NNN_TMPFILE
+    rm $NNN_TMPFILE
+end

hmModules/apps/shells/fish/functions/ssh.fish

@@ -0,0 +1 @@
+command ssh -o IPQoS=0 $argv;