Chris Hofstaedtler <z...@debian.org> writes: >>podman run -it --rm debian:trixie >>apt-get update >>apt-get install -y --no-install-recommends gradle >>PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin >>gradle >>/bin/gradle: 23: cd: can't cd to /bin/../share/gradle/bin/.. > > I'll point out that this is not even trying to build a Debian package, > so the typical Debian package build environment would be irrelevant > here.
Right, I was just giving a way to reproduce the problem. Packages that rely on 'gradle' during build will fail with that error message too, when built with a PATH that has /bin before /usr/bin. >>The problem seems that it is generating a relative path to its own >>command expanded via PATH, which doesn't work because there is no /share >>symlink but there is /usr/share/. >> >>Is this a problem in 'gradle' (and other packages) that should be >>reported and fixed? > IMO yes, see below. > >> What severity? > > normal? Thanks -- I opened https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1104784 >>What can packages assume about PATH? What can packages not assume? In >>particular wrt ordering. Are there written down rules for this? > > Probably in POSIX. Per my understanding PATH is defined to be used in > a specific algorithm, which is basically "stat the name of the > executable you are looking for in these directories, in the given > order". Everything else is probably unspecified, and deriving file > system paths that are not actually given in PATH is undefined > behaviour, and can just break. I think there could be a Debian policy that says that packages MUST NOT assume anything about PATH except that it should somewhere include /usr/bin (and maybe also /usr/games) during build. It seems common in Debian to add /*/sbin too, but when building as non-root, I don't think /*/sbin should be part of PATH and packages shouldn't assume this. > If a program needs to know a path to supporting files, this path > should be known at build time of that program (here: gradle), and then > be baked into it (and maybe also be configurable at runtime). Agreed. /Simon
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