fix.sh in checkoff-0.12.1 vs fix.sh in checkoff-0.13.0

@@ -93,11 +93,11 @@
 
 # You can find out which feature versions are still supported / have
 # been release here: https://www.ruby-lang.org/en/downloads/
 ensure_ruby_versions() {
   # You can find out which feature versions are still supported / have
-  # been release here: https://www.python.org/downloads/
+  # been release here: https://www.ruby-lang.org/en/downloads/
   ruby_versions="$(latest_ruby_version 2.6)"
 
   echo "Latest Ruby versions: ${ruby_versions}"
 
   ensure_ruby_build_requirements
@@ -225,18 +225,20 @@
   ensure_dev_library zlib.h zlib zlib1g-dev
   ensure_dev_library bzlib.h bzip2 libbz2-dev
   ensure_dev_library openssl/ssl.h openssl libssl-dev
   ensure_dev_library ffi.h libffi libffi-dev
   ensure_dev_library sqlite3.h sqlite3 libsqlite3-dev
+  ensure_dev_library lzma.h xz liblzma-dev
+  ensure_dev_library readline.h readline libreadline-dev
 }
 
 # You can find out which feature versions are still supported / have
 # been release here: https://www.python.org/downloads/
 ensure_python_versions() {
   # You can find out which feature versions are still supported / have
   # been release here: https://www.python.org/downloads/
-  python_versions="$(latest_python_version 3.9)"
+  python_versions="$(latest_python_version 3.10)"
 
   echo "Latest Python versions: ${python_versions}"
 
   ensure_python_build_requirements
 
@@ -269,18 +271,20 @@
   pyenv virtualenv "${latest_python_version}" mylibs || true
   # shellcheck disable=SC2086
   pyenv local "${virtualenv_name}" ${python_versions} mylibs
 }
 
-ensure_pip() {
+ensure_pip_and_wheel() {
   # Make sure we have a pip with the 20.3 resolver, and after the
   # initial bugfix release
   major_pip_version=$(pip --version | cut -d' ' -f2 | cut -d '.' -f 1)
   if [[ major_pip_version -lt 21 ]]
   then
     pip install 'pip>=20.3.1'
   fi
+  # wheel is helpful for being able to cache long package builds
+  pip show wheel >/dev/null 2>&1 || pip install wheel
 }
 
 ensure_python_requirements() {
   make pip_install
 }
@@ -323,10 +327,10 @@
 
 ensure_python_versions
 
 ensure_pyenv_virtualenvs
 
-ensure_pip
+ensure_pip_and_wheel
 
 ensure_python_requirements
 
 ensure_shellcheck