Hello, The manual says that TMPDIR does not leak into the build environment:
> You can influence the directory where the daemon stores build trees > via the ‘TMPDIR’ environment variable. However, the build tree within > the chroot is always called ‘/tmp/guix-build-NAME.drv-0’, where NAME is > the derivation name—e.g., ‘coreutils-8.24’. This way, the value of > ‘TMPDIR’ does not leak inside build environments, which avoids > discrepancies in cases where build processes capture the name of their > build tree. However, later it says: > When the daemon performs a build on behalf of the user, it creates a > build directory under ‘/tmp’ or under the directory specified by its > ‘TMPDIR’ environment variable; this directory is shared with the > container for the duration of the build. Be aware that using a > directory other than ‘/tmp’ can affect build results—for example, with a > longer directory name, a build process that uses Unix-domain sockets > might hit the name length limitation for ‘sun_path’, which it would > otherwise not hit. This seems like a contradiction, or do I misunderstand? Regards, Florian