absorb: preserve branch-changing changesets even if empty
This makes the behavior consistent with 'hg commit', which allows to create
otherwise empty changesets if the branch changes compared to the parent. A
branch change can denote important information, so it should be preserved.
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at https://mozilla.org/MPL/2.0/.
/*! Build script to integrate PyOxidizer. */
fn main() {
if let Ok(config_rs) = std::env::var("DEP_PYTHONXY_DEFAULT_PYTHON_CONFIG_RS") {
println!(
"cargo:rustc-env=PYOXIDIZER_DEFAULT_PYTHON_CONFIG_RS={}",
config_rs
);
} else {
panic!("unable to find build artifacts generated by pyembed crate");
}
}