At Thu, 13 Jun 2019 11:24:03 -0600, Eric Eide wrote:
> As described here <>,
> > When a Git repository is specified as a package source, then a copy of the
> > repository content is installed as the package implementation. That
> > installation mode is designed for package consumers, who normally use a
> > package without modifying it.
> My understanding is that "the copy of the repository content" is
> produced simply, e.g., by checking out the repository at the
> appropriate commit and then discarding the `.git` directory.

In case it helps clarify: The repository content is obtained not using
`git` in a shell, which would create portability and dependency
problems for Racket, but using `git-checkout` from the
`net/git-checkout` library. The `git-checkout` function doesn't create
a ".git" subdirectory for metadata.

Since only the "content" (is there a better technical term?) of a
commit is checked out, there's no ".git" to remove. Operationally,
though, I think you mean that it's equivalent to `git clone` followed
by removing the ".git" directory, which sounds right.

> An alternative would be to produce the repository content by running `git
> archive`.  This would allow certain transformations to be made on the content,
> e.g., inserting the commit hash into one of the exported files.  One could do
> other minor tricks as well, like excluding "junk" files.  See the ATTRIBUTES
> section of the man page at <>.
> Is there a reason why the Racket package system doesn't run `git archive` to
> produce the content for the "non-developer" version of a package?

The simplistic answer is that `git-checkout` doesn't support a `git
archive`-like mode. And a practical answer is that no one is likely to
implement it in the near term. :)

Note that there's a notion of "source package" and "built package"
pruning at the Racket package-system level, and it at least includes a
`git archive`-like option in "info.rkt" for omitting files.[*] By
default, bundling a package skips a ".git" subdirectory. There could be
a `git archive` layer in addition, though.


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