diff --git a/install_programs b/install_programs
index 694911e..bcfa8c0 100755
--- a/install_programs
+++ b/install_programs
@@ -17,9 +17,7 @@ while [[ $# > 0 ]]; do
     shift
 done
 
-local script_dir=$(cd $(dirname "${ZSH_SOURCE[0]}") &> /dev/null && pwd)
-log "install_programs // script_dir: $script_dir -- args: $single_script_filter"
-cd $script_dir
+log "install_programs // single_script_filter: $single_script_filter"
 local scripts=(`find ./installs_and_builds -maxdepth 1 -mindepth 1 -type f`)
 for script in $scripts; do
     if [[ -x $script ]]; then
diff --git a/installs_and_builds/fzf b/installs_and_builds/fzf
index 66d7c9c..5a8f595 100755
--- a/installs_and_builds/fzf
+++ b/installs_and_builds/fzf
@@ -1,2 +1,2 @@
 #!/bin/zsh
-brew install fzf
+${=BOX_SETUP_INSTALL_COMMAND} fzf
diff --git a/installs_and_builds/git b/installs_and_builds/git
index d9f9c66..1e8a363 100755
--- a/installs_and_builds/git
+++ b/installs_and_builds/git
@@ -1,2 +1,2 @@
 #!/bin/zsh
-brew install git
+${=BOX_SETUP_INSTALL_COMMAND} git
diff --git a/installs_and_builds/libs b/installs_and_builds/libs
index 9b47564..bd56596 100755
--- a/installs_and_builds/libs
+++ b/installs_and_builds/libs
@@ -3,4 +3,4 @@
 local lua_package="lua5.1"
 [[ "$BOX_SETUP_OS" = "macos" ]] && lua_package="lua@5.1"
 
-$BOX_SETUP_INSTALL_COMMAND cmake gettext "$lua_package" liblua5.1-0-dev
+${=BOX_SETUP_INSTALL_COMMAND} cmake gettext "$lua_package" liblua5.1-0-dev
diff --git a/installs_and_builds/neovim b/installs_and_builds/neovim
index 4493acc..84f1954 100755
--- a/installs_and_builds/neovim
+++ b/installs_and_builds/neovim
@@ -1,3 +1,3 @@
 #!/bin/zsh
 
-brew install neovim
+${=BOX_SETUP_INSTALL_COMMAND} neovim
diff --git a/installs_and_builds/neovim_from_source b/installs_and_builds/neovim_from_source
index a0c17d6..0fad5e6 100755
--- a/installs_and_builds/neovim_from_source
+++ b/installs_and_builds/neovim_from_source
@@ -9,7 +9,6 @@
 # git -C $neovim_dir fetch --all
 # git -C $neovim_dir checkout $neovim_version
 # 
-# 
 # make -C $neovim_dir clean
 # make -C $neovim_dir CMAKE_BUILD_TYPE=RelWithDebInfo
 # sudo make -C $neovim_dir install
diff --git a/installs_and_builds/tmux b/installs_and_builds/tmux
index d1b2e08..0c59dd4 100755
--- a/installs_and_builds/tmux
+++ b/installs_and_builds/tmux
@@ -1,2 +1,2 @@
 #!/bin/zsh
-brew install tmux
+${=BOX_SETUP_INSTALL_COMMAND} tmux
diff --git a/installs_and_builds/utils b/installs_and_builds/utils
index fc6f600..e3ac3de 100755
--- a/installs_and_builds/utils
+++ b/installs_and_builds/utils
@@ -2,4 +2,4 @@
 
 # likely on unix systems already: find xargs grep sed awk
 
-brew install jq parallel
+${=BOX_SETUP_INSTALL_COMMAND} jq parallel
diff --git a/make_config_dirs b/make_config_dirs
new file mode 100755
index 0000000..db34d3f
--- /dev/null
+++ b/make_config_dirs
@@ -0,0 +1,7 @@
+#!/bin/zsh
+
+[[ ! -d $HOME/.config ]] && mkdir $HOME/.config
+[[ ! -d $HOME/.local ]] && mkdir $HOME/.local
+[[ ! -d $HOME/.local/bin ]] && mkdir $HOME/.local/bin
+[[ ! -d $HOME/.local/build ]] && mkdir $HOME/.local/build
+[[ ! -d $HOME/.local/tmp ]] && mkdir $HOME/.local/tmp
diff --git a/make_desired_dirs b/make_desired_dirs
new file mode 100755
index 0000000..7033756
--- /dev/null
+++ b/make_desired_dirs
@@ -0,0 +1,4 @@
+#!/bin/zsh
+
+[[ ! -d $HOMEBOX ]] && mkdir $HOMEBOX
+[[ ! -d $DEVDIR ]] && mkdir $DEVDIR
diff --git a/post_config_01 b/post_config_01
deleted file mode 100755
index 4b3f91c..0000000
--- a/post_config_01
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/bin/zsh
-
-mkdirs_after_setting_shell_env_vars() {
-    [[ ! -d $HOMEBOX ]] && mkdir $HOMEBOX
-    [[ ! -d $DEVDIR ]] && mkdir $DEVDIR
-}
-
-mkdirs_after_setting_shell_env_vars
diff --git a/pre_install_01 b/pre_install_01
deleted file mode 100755
index c6f3718..0000000
--- a/pre_install_01
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/bin/zsh
-
-mkdirs_before_copying_config_files() {
-    [[ ! -d $HOME/.config ]] && mkdir $HOME/.config
-    [[ ! -d $HOME/.local ]] && mkdir $HOME/.local
-    [[ ! -d $HOME/.local/bin ]] && mkdir $HOME/.local/bin
-    [[ ! -d $HOME/.local/build ]] && mkdir $HOME/.local/build
-    [[ ! -d $HOME/.local/tmp ]] && mkdir $HOME/.local/tmp
-}
-
-[[ -z $BOX_SETUP_OS ]] && echo "BOX_SETUP_OS must be set" && exit 1
-
-local install_cmd=''
-case $BOX_SETUP_OS in
-    (arch | artix) install_cmd="sudo pacman -S" ;;
-    (debian) export install_cmd="sudo apt install" ;;
-    (macos) export install_cmd="brew install" ;;
-esac
-export BOX_SETUP_INSTALL_COMMAND="$install_cmd"
-
-mkdirs_before_copying_config_files
-
diff --git a/set_env_vars b/set_env_vars
new file mode 100644
index 0000000..c4eddd2
--- /dev/null
+++ b/set_env_vars
@@ -0,0 +1,9 @@
+[[ -z $BOX_SETUP_OS ]] && echo "BOX_SETUP_OS must be set" && exit 1
+
+local install_cmd=''
+case $BOX_SETUP_OS in
+    (arch | artix) install_cmd="sudo pacman -S" ;;
+    (debian) export install_cmd="sudo apt install" ;;
+    (macos) export install_cmd="brew install" ;;
+esac
+export BOX_SETUP_INSTALL_COMMAND="$install_cmd"
diff --git a/setup_this_box b/setup_this_box
new file mode 100755
index 0000000..ba073cf
--- /dev/null
+++ b/setup_this_box
@@ -0,0 +1,7 @@
+#!/bin/zsh
+
+source set_env_vars
+./install_programs
+./make_config_dirs
+./copy_configs
+./make_desired_dirs
diff --git a/src_files/.local/bin/.tmux-session-hydrate b/src_files/.local/bin/.tmux-session-hydrate
index 6e59d92..4a376c7 100644
--- a/src_files/.local/bin/.tmux-session-hydrate
+++ b/src_files/.local/bin/.tmux-session-hydrate
@@ -1,5 +1,3 @@
-#!/bin/zsh
-
 local omitted_dirs=(
     $HOME
     $HOMEBOX
@@ -13,3 +11,11 @@ local omitted_dirs=(
 
 clear
 
+## example template for custom override
+# tmux new-window -d -n cmd
+# tmux send-keys -t :cmd "echo 'in cmd'" c-M
+# tmux new-window -d -n another
+# tmux send-keys -t :another "echo 'in another'" c-M
+# tmux rename-window $EDITOR
+# $EDITOR .
+# clear