Add bash completion sourcing, with cache

Recommendations came from this blog post:
    https://blog.gitbutler.com/how-git-core-devs-configure-git/

Let's see how this works out lol

Test

.gitmodules

@@ -61,6 +61,3 @@
 [submodule "vim/.vim/nvim-bundle/zk-nvim"]
 	path = vim/.vim/nvim-bundle/zk-nvim
 	url = https://github.com/zk-org/zk-nvim.git
-[submodule "vim/.vim/bundle/vim-helm"]
-	path = vim/.vim/bundle/vim-helm
-	url = https://github.com/towolf/vim-helm.git

apply-dotfiles

@@ -5,11 +5,6 @@ apply_dotfile() {
   stow --adopt -S -t "${HOME}" "${directory_to_stow}"
 }
 
-revert_dotfile() {
-  directory_to_stow="${1}"
-  stow -D -t "${HOME}" "${directory_to_stow}"
-}
-
 # Adopt will change the files in stow to match existing files.
 # We don't want this, we just want to handle existing files gracefully.
 # We simply adopt all the files and then at the end restore our git repo to undo changes
@@ -17,35 +12,22 @@ restore_from_adoption() {
   git restore .
 }
 
-mode_command=${1:-apply}
+apply_dotfile bash
-if [ "${mode_command}" != "apply" ] && [ "${mode_command}" != "revert" ]; then
+apply_dotfile sh
-  echo "$0: mode command ("'${1}'") must be apply or revert" 1>&2
+apply_dotfile readline
-  exit 1
+apply_dotfile screen
-fi
 
-operation() {
+apply_dotfile git
-  ${mode_command}_dotfile ${1}
+apply_dotfile xdg
-}
 
-# Create .local/bin to prevent tree folding
+apply_dotfile vim
-mkdir -p ~/.local/bin
 
-operation bash
+apply_dotfile ruby
-operation sh
+apply_dotfile python
-operation readline
-operation screen
-
-operation git
-operation xdg
-
-operation vim
-
-operation ruby
-operation python
 
 # Only if inside a coder instance
 if [ -n "${CODER}" ]; then
-  operation gnupg
+  apply_dotfile gnupg
 fi
 
 # Check that SSH version is above 9.2 (where EnableEscapeCommandline was added) before conditionally adding
@@ -56,6 +38,6 @@ cat <<CONFIG > ssh/.ssh/extra.conf
 EnableEscapeCommandline yes
 CONFIG
 fi
-operation ssh
+apply_dotfile ssh
 
 restore_from_adoption

bash/.bashrc

@@ -1,41 +1,5 @@
 #{- ~/.bashrc -}#
 
-#{- SOURCING -}#
-
-# Source profile, if it hasn't already been loaded
-if [ -z "$__PROFILE_DONE" ]; then
-  . $HOME/.profile
-fi
-
-# Source .env to extend with secret/sensitive environment variables if it exists
-if [ -r "$HOME/.env" ]; then
-  . "$HOME/.env"
-fi
-
-if [ -r "$HOME/.config/xdg/env" ]; then
-  . "$HOME/.config/xdg/env"
-fi
-
-# Source aliases, if they exist
-if [ -f "$HOME/.aliases" ] && [ -r "$HOME/.aliases" ]; then
-  . "$HOME/.aliases"
-fi
-
-# Source private aliases, if they exist
-if [ -f "$HOME/.private_aliases" ] && [ -r "$HOME/.private_aliases" ]; then
-  . "$HOME/.private_aliases"
-fi
-
-# Source functions, if they exist
-if [ -f "$HOME/.functions" ] && [ -r "$HOME/.functions" ]; then
-  . "$HOME/.functions"
-fi
-
-# Source private functions, if they exist
-if [ -f "$HOME/.private_functions" ] && [ -r "$HOME/.private_functions" ]; then
-  . "$HOME/.private_functions"
-fi
-
 #{- PROMPT -}#
 
 if which tput &> /dev/null && tput bold &> /dev/null; then
@@ -56,6 +20,7 @@ else
   no_color="\[\033[0m\]"
 fi
 
+
 export PS1="${green}"'\$'"${no_color} "
 export DIRENV_PS1="${red}"'\$'"${no_color} "
 export NIX_SHELL_PS1="${blue}"'λ'"${no_color} "
@@ -90,7 +55,7 @@ if which direnv &> /dev/null; then
       PS1=${ORIG_PS1}
     fi
   }
-  prompt_command_prepend update_prompt
+  PROMPT_COMMAND="update_prompt; $PROMPT_COMMAND"
 fi
 
 # Continuation Prompt: "> " in cyan
@@ -100,10 +65,7 @@ export PS4="${blue}#${no_color} "
 
 #{- HISTORY -}#
 
-prompt_command_prepend "history -r"
+PROMPT_COMMAND="history -n; history -w; history -c; history -r; $PROMPT_COMMAND"
-prompt_command_prepend "history -c"
-prompt_command_prepend "history -w"
-prompt_command_prepend "history -n"
 # PROMPT_COMMAND="echo hist1; history; history -n; echo hist2; history; history -w; echo hist3; history; history -c; echo hist4; history; history -r; echo hist5; history; $PROMPT_COMMAND"
 export HISTFILE="$HOME/.history/bash"
 export HISTTIMEFORMAT="%F %T  "
@@ -131,18 +93,98 @@ log_bash_persistent_history()
   fi
 }
 
-prompt_command_prepend "log_bash_persistent_history"
+PROMPT_COMMAND="log_bash_persistent_history; $PROMPT_COMMAND"
 
 
-# Source bash completion, this file will then lazy load all other completions
+#{- SOURCING -}#
+
+
+# Source profile, if it hasn't already been loaded
+if [ -z "$__PROFILE_DONE" ]; then
+  . $HOME/.profile
+fi
+
+# Source .env to extend with secret/sensitive environment variables if it exists
+if [ -r "$HOME/.env" ]; then
+  . "$HOME/.env"
+fi
+
+if [ -r "$HOME/.config/xdg/env" ]; then
+  . "$HOME/.config/xdg/env"
+fi
+
+# Source aliases, if they exist
+if [ -f "$HOME/.aliases" ] && [ -r "$HOME/.aliases" ]; then
+  . "$HOME/.aliases"
+fi
+
+# Source private aliases, if they exist
+if [ -f "$HOME/.private_aliases" ] && [ -r "$HOME/.private_aliases" ]; then
+  . "$HOME/.private_aliases"
+fi
+
+# Source functions, if they exist
+if [ -f "$HOME/.functions" ] && [ -r "$HOME/.functions" ]; then
+  . "$HOME/.functions"
+fi
+
+# Source private functions, if they exist
+if [ -f "$HOME/.private_functions" ] && [ -r "$HOME/.private_functions" ]; then
+  . "$HOME/.private_functions"
+fi
+
 source_completions() {
+  # Source completions if they are available
+  completion_dirs=(
+    "/usr/share/bash-completion/completions"
+    "/etc/bash_completion.d"
+  )
+  cache_dir="${XDG_CACHE_HOME}/bash-completion-sourcing"
+
+  if [ "${BUILD_CACHE}" ]; then
+    mkdir -p "${cache_dir}"
+  fi
+
+  # Base completion sourcing, later completions will fail without this
   if [ -r "/usr/share/bash-completion/bash_completion" ]; then
     . "/usr/share/bash-completion/bash_completion"
   elif [ -r "/etc/bash_completion" ]; then
     . "/etc/bash_completion"
   fi
+
+  # Completions from packages
+  export TIMEFORMAT="%R"
+  for completion_dir in "${completion_dirs[@]}"; do
+    if [ -d "${completion_dir}" ] && [ -r "${completion_dir}" ]; then
+      for completion_file in "${completion_dir}"/*; do
+        if [ "$BUILD_CACHE" ]; then
+          echo "Sourcing ${completion_file}"
+          . "${completion_file}"
+          timeavg=$(time (. "${completion_file}") 2>&1 1>/dev/null)
+          timeavg=$(echo $timeavg | cut -d '.' -f 2)
+          if [ "${timeavg}" -gt 100 ]; then
+            echo "This ones slow, adding to cache"
+            echo "${timeavg}" > "${cache_dir}/$(basename ${completion_file})"
+          elif [ "${timeavg}" -gt 10 ]; then
+            echo "This ones a little slow"
+            echo "${timeavg}"
+          fi
+        else
+          if ! [ -e "${cache_dir}/$(basename ${completion_file})" ]; then
+            . "${completion_file}"
+          else
+            :
+          fi
+        fi
+      done
+    fi
+  done
+  unset TIMEFORMAT
 }
-source_completions
+
+if [ "$BASH_COMPLETION_ENABLED" ]; then
+  source_completions
+fi
 
 # Preserve the usefulness of set -x by attempting to hide everything that
 # happens in prompt_command
@@ -159,12 +201,8 @@ preserve_xtrace_reset() {
   fi
 } 2>/dev/null
 
-prompt_command_prepend preserve_xtrace
+PROMPT_COMMAND="preserve_xtrace; $PROMPT_COMMAND preserve_xtrace_reset"
-prompt_command_append  preserve_xtrace_reset
 
 if $(which direnv &> /dev/null); then
-  # Only if direnv isn't already defined in our prompt_command
-  if ! grep -q _direnv_hook <<< $PROMPT_COMMAND; then
   eval "$(direnv hook bash)"
-  fi
 fi

bash/.functions

@@ -18,59 +18,6 @@ maths()
 
 cat_with_newline()
 {
-  \cat "$@" && echo
+  cat "$@" && echo
 }
 alias cat="cat_with_newline"
-
-k_prompt()
-{
-  set -x
-  if [ -z ${KUBE_PROMPT+x} ]; then
-    export KUBE_PROMPT=1
-  else
-    unset KUBE_PROMPT
-  fi
-  set +x
-}
-
-kube_prompt()
-{
-  set -x
-  if ! [ -z ${KUBE_PROMPT+x} ]; then
-    context=$(\cat ${KUBECONFIG} \
-              | grep "current-context: " \
-              | sed "s/current-context: //")
-    echo {$context}
-  fi
-  set +x
-}
-
-g_prompt()
-{
-  if ! [ -z ${GIT_PROMPT+x} ]; then
-    export GIT_PROMPT=1
-  else
-    unset GIT_PROMPT
-  fi
-}
-
-git_prompt()
-{
-  if ! [ -z ${GIT_PROMPT+x} ]; then
-    # Determine if we are in a git repository
-    if git rev-parse --is-inside-work-tree &> /dev/null; then
-      branch=$(git rev-parse --abbrev-ref HEAD)
-      echo [$branch]
-    fi
-  fi
-}
-
-prompt_command_append() {
-  arg=${1}
-  PROMPT_COMMAND=${PROMPT_COMMAND:+"$PROMPT_COMMAND; "}"${arg}"
-}
-
-prompt_command_prepend() {
-  arg=${1}
-  PROMPT_COMMAND="${arg}"${PROMPT_COMMAND:+"; $PROMPT_COMMAND"}
-}

installers/install-nix.sh

@@ -7,12 +7,8 @@ set -e
 set -x
 
 # Abort installation if Nix is already installed
-if [ -d /nix/store ]; then
+if [ -d /nix ]; then
   exit 0
-elif [ -d /nix ] && ! [ -O /nix ]; then
-  # If we don't own /nix use sudo to chown it.
-  # If we can't sudo then nothing we do here will work so we just let this fail
-  sudo chown $UID /nix
 fi
 
 # Workaround to make a single user install work as root

screen/.config/screen/screenrc

@@ -1,5 +1,5 @@
 # Defaults to using bash as the shell
-defshell $SHELL
+defshell bash
 # Extend scrollback buffer
 defscrollback 100000
 # Disable startup message