💥 draft python install fish script

install_python.fish

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+# TODO: turn this into an actual script
+# TODO: rename to install_python.fish
+
+# curl https://pyenv.run | bash
+# set -Ux PYENV_ROOT $HOME/.pyenv
+# fish_add_path $PYENV_ROOT/bin
+
+# now add:
+# pyenv init - | source
+# to:
+# ~/.config/fish/config.fish
+
+# install suggested build environment:
+# sudo apt update; sudo apt install build-essential libssl-dev zlib1g-dev \
+# libbz2-dev libreadline-dev libsqlite3-dev curl \
+# libncursesw5-dev xz-utils tk-dev libxml2-dev libxmlsec1-dev libffi-dev liblzma-dev