#18240 Support natively capturing files from the build root, not the working directory Issue created by chrisjrn One feature I've recently implemented for `adhoc_tool`/`shell_command` is the

root_output_directory

field, which allows for the output digest from a process to be rooted somewhere other than the working directory. Similarly,

output_files

and

output_directories

can be specified as relative to the working directory, which may end up being

../

-ed locations (as long as they do not jump out of the build root. Frustratingly,

Process

provides its outputs relative to the

workdir

that is provided to

Process

, which means that capturing files relative to the build root involves a cumbersome hack: the

Process

is modified to be a

bash

process that calls

cd

into the original

workdir

, the

workdir

is set to

None

and

output_files

and

output_directories

are mangled to compensate. The

argv

sequence is

shlex.join()

-ed into a shell argument string, which limits the effective maximum length of the arguments somewhat. It would be handy if it were possible to make

Process

output files relative to the build root automatically. pantsbuild/pants