[bug#51838] [PATCH v2 05/26] guix: node-build-system: Add #:absent-dependencies argument.

[Liliana Marie Prikler]

Hi,

Am Freitag, den 19.11.2021, 23:33 -0500 schrieb Philip McGrath:
> Many of Guix's Node.js packages are built without some of the
> dependencies they specify in their "package-lock.json" files,
> either because we don't have them packaged yet (e.g. test
> utilities) or because we don't want them (e.g. to reduce the
> closure size). Previously, Guix package definitions would work
> around this situation by deleting the `'configure`
> phase (i.e. the initial `npm install`).
> 
> This commit adds an optional #:absent-dependencies argument to
> `node-build-system` to list Node.js packages that should be
> removed from the "package.json" file.Retaining the `'configure`
> phase avoids skipping checks for the dependencies that are
> intended to be present and other actions performed by `npm
> install`, such as automatically building native add-ons with
> `node-gyp` when the "gypfile" key is present.
> 
> [...]
This is a somewhat decent approach, but I wonder whether we could
improve this.  Does nodejs complain if a dependency exists in the code,
but is not present in the packages.json?

In the resolve-dependencies subprocedure, we could check whether we
have a matching input somewhere and only include the dependency if we
do.  WDYT?