Reid Priedhorsky

Also, some of this should likely be documented as test suite dependencies.

`pigz(1)` does not parallelize decompression because it [“can’t be parallelized, at least not without specially prepared deflate streams for that purpose”](https://zlib.net/pigz/pigz.pdf) [libdeflate](https://github.com/ebiggers/libdeflate) does provide an optimized `gunzip(1)` that's twice as...

OK on the Spack archive that led down this path, the performance penalty is more like 20%.

The [Dockerfile reference](https://docs.docker.com/engine/reference/builder/#arg) suggests it's the base image: > An `ARG` instruction goes out of scope at the end of the build stage where it was defined. To use an...

See also issue #779.

The relevant [nVidia project](https://github.com/NVIDIA/libnvidia-container) is also Apache 2 licensed so we can read the source code to see what their algorithm is.

This might be the same as #1068.

Currently, the git repository for each image is stored in-band in the standard location, `.git` at the top of the working directory. This prevents the image from having any files...

Issue #1541 describes actual breakage caused by this.

`.gitignore` could go in [`bucache/info/exclude`](https://git-scm.com/docs/gitignore).