fixup pipBulkShow function to prevent breaking with numerous names

[ficapy]

When there are very numerous pip dependencies, execSync will report an error, see https://stackoverflow.com/questions/63796633/spawnsync-bin-sh-enobufs

[williamfzc]

Same here if my project using some large libs like pytorch.

[Titou325]

Hi,

Same thing here, passing --environment empty.json allows indexing but pip3 show -f packageA packageB ... fails with ENOBUFS. A workaround is to parse the environment by ourselves in the meantime.

The proposed fix of extending the buffer size to 10MB seems good enough for a first attempt. In the future this can be switched to a parsing window but requires switching to async logic as far as I understand.

Are there pending tasks for this PR?

[Titou325]

Both execSync and spawnSync allow the maxBuffer option (see https://nodejs.org/docs/latest-v16.x/api/child_process.html#child_processexecsynccommand-options). The refactoring is not needed but good practice.

Looks good to me.