view rust/hgcli/build.rs @ 47478:ca8121d26732

dirstate-tree: Keep a counter of descendant nodes that have an entry

… and change the `DirstateMap::has_dir` method to be based on this counter
being non-zero instead of the mere presence of a node.

A node with zero descendent with an entry currently should be removed from
the tree, but soon we’ll make the dirstate track additional nodes.
(Specifically, for non-ignored directories in order to keep track of their
mtime and optimize status by doing fewer `read_dir` calls.)

Differential Revision: https://phab.mercurial-scm.org/D10922

// 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");
    }
}