bin/setup-hg-evolve

#!/bin/bash
set -eu -o pipefail

hg --version >/dev/null

shebang="$(head -n 1 $(which hg) | sed 's/^#!//')"

if ! ($shebang -m pip -V) &>/dev/null; then
  curl -fsSL --compressed https://bootstrap.pypa.io/get-pip.py |
    $shebang - --user
fi

$shebang -m pip install --user --upgrade hg-evolve

if ! grep -qsw evolve ~/.hgext/hgrc; then
  printf '[extensions]\nevolve =\n' >> ~/.hgext/hgrc
fi

if ! grep -qsw topic ~/.hgext/hgrc; then
  printf '[extensions]\ntopic =\n' >> ~/.hgext/hgrc
fi