Modifying default variables and config

Renamed variables for defaults:
- flatpak_method -> default_flatpak_method: system
- defaults.paths.prefix -> default_install_prefix: /usr/local
New variables:
- default_install_method: package

tasks/facts.yml

@@ -24,13 +24,13 @@
     - not use_local
   ansible.builtin.set_fact:
     path:
-      prefix: "{{ defaults.path.prefix }}"
+      prefix: "{{ default_install_prefix }}"
 
 - name: Set install variables
   ansible.builtin.set_fact:
     ext_become: "{{ not use_local }}"
     path:
-      prefix: "{{ path.prefix }}"
+      prefix: "{{ default_install_prefix }}"
       appimage: "{{ path.appimage | default(path.prefix ~ defaults.path.suffix.appimage) }}"
       archive: "{{ path.archive | default(path.prefix ~ defaults.path.suffix.archive) }}"
       bin: "{{ path.bin | default(path.prefix ~ defaults.path.suffix.bin) }}"
@@ -45,7 +45,6 @@
     flatpak_remote: # flatpak remotes, includes flathub by default
       - name: flathub
         url: https://dl.flathub.org/repo/flathub.flatpakrepo
-    flatpak_method: "{% if use_local %}user{% else %}system{% endif %}"
     pkg_appimage: [] # appimages to install
     pkg_flatpak: [] # flatpak packages to install
     pkg_snap: [] # snpacraft.io packages
@@ -70,22 +69,24 @@
 
 - name: Set macOS specific facts
   when:
-    - ansible_distribution == 'MacOSX'
+    - ansible_distribution == 'MacOSX' or
+      ansible_distribution == 'MacOS'
   ansible.builtin.set_fact:
     brewtap: [] # homebrew taps to add
-    pipx_exec: "/opt/homebrew/bin/pipx"
+    pipx_exec: "/opt/homebrew/bin/pipx" # pipx executable
     pkg_cask: [] # homebrew casks
     pkg_tap: [] # homebrew tap packages
     sys_pkg_become: false # homebrew doesn't require sudo access
-    lib_path: lib
+    lib_path: lib # macos shared library path
 
 - name: Set OS independant facts
   ansible.builtin.set_fact:
     pkg_archive: [] # packages installed via prebuilt archive
-    pkg_cargo: [] # rust packages from cargo
+    pkg_cargo: [] # rust packages from cargo using `cargo install`
+    pkg_cargo_build: [] # rust packages using `cargo build` before install
     pkg_go: [] # go applications
     pkg_npm: [] # npm commands
     pkg_pipx: [] # pipx packages
-    pkg_zig: []
+    pkg_zig: [] # zig packages
     pkg_src: [] # packages built from source
     pkg_sys: [] # system package manager packages, homebrew on macOS, dnf for RedHat based, apt for Debian Based