That's right: there's no one-step operation right now, and a new one-step tool that sets things up the way you need would be a great contribution.
To avoid anything currently in user scope, maybe your new tool would configure the project space with a fresh 'installation-name. After setting 'pkgs-dir to be the project-specific package directory while setting 'pkg-search-dir to chain to the original installation's package directory, it could install some initial packages in the new "installation" scope --- without affecting "user" scope or the original "installation" scope. By setting 'lib-dir and 'shared-dir and similar directories to a project-specific location, any files installed by packages in the new "installation" scope would not pollute the old installation. And so on. I'm not sure of the details, and it's possible that something new is would still be needed in the collection or package or `setup/dirs` layers to make the one-step tool work right. It's still possible that the existing support doesn't do what you want at all. I'm unclear on whether you want to install packages in project scope that would collide with things in the original "installation" scope, but that's tricky at best. Conceptually, it works to install a package in a narrower scope and shadow one in a wider scope, but only if everything in the wider scope that depends on the shadowed package is also shadowed in the narrower scope. If you want to be able to do that, then probably this isn't the right direction. At Thu, 30 Apr 2020 20:54:33 +0000, Sage Gerard wrote: > Some of the pieces are falling into place, but I'm still chewing on something. > > Let me rephrase my goal with added details: As a library author, I need my > users to have ONE command that safely installs a package with collection > paths > that would collide in a user or (system) installation scope. > > The docs on package scopes and your email make it sound like I have to ask my > users to create and configure an installation, and make sure no colliding > packages exist at user scope. All before installing the package. Can your > recipe be done in one step? If not, I think that's where I'd like to > contribute. > > ~slg > > ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ > On Thursday, April 30, 2020 3:24 PM, Matthew Flatt <mfl...@cs.utah.edu> wrote: > > > Consider viewing "project" scope as "installation" scope, where an > > existing installation becomes a wider scope after "installation". Then, > > the exiting configuration and scope machinery will match what you need. > > > > If you take that view, then a project gets its own "etc" where you put > > a "config.rktd" to configure the project-as-installation. That > > "config.rktd" can point to the original installation as the next layer > > for various searches: "collects", "lib", and so on. > > > > You can even set `config-tethered-console-bin-dir` and > > `config-tethered-gui-bin-dir` to get project-local `racket`, `raco`, > > etc., executables that have the right configuration path built in, > > instead of having to use something like environment variables to select > > a project's configuration. > > > > At least, that's one of the intentions of the existing layers. I didn't > > push it further (e.g., to a `raco` command that would set up a project > > in this sense) because there was not demand at the time. > > > > At Thu, 30 Apr 2020 19:10:11 +0000, Sage Gerard wrote: > > > > > Alright, so after thinking about how to improve Racket package management > > > I > > > decided that I want to add project scoping logic to raco pkg install. I'm > not > > > sure --scope-dir is enough because the docs say that the installation is > > > apparently checked before the scoped directories, and there are no lock > files. > > > Correct me if I'm wrong. > > > I've previously made commitments re: a CI dashboard and a syntax > highlighter. > > > Those remain, but don't seem to need me right this minute. Meanwhile, > > > this > is > > > one of those features that hurts to not have, especially with current > > > limitations in the default package catalog. > > > https://akkuscm.org says it supports plt-r6rs, so I > > > see two paths: Either implement the diff between that and Racket today in > > > Akku, or add just enough of Akku to a raco pkg install --scope project > > > command. I expect both efforts would be painful, but the latter seems > better. > > > Are there any landmines are in the raco pkg install code that I need to > know > > > about? I'd rather not make a bunch of changes with subtle consequences > > > that > > > I'm not seeing. I'd also like to know who would be the best person to > review > > > my proposed changes in this area. > > > ~slg > > > -- > > > You received this message because you are subscribed to the Google Groups > > > "Racket Developers" group. > > > To unsubscribe from this group and stop receiving emails from it, send an > > > email to racket-dev+unsubscr...@googlegroups.com. > > > To view this discussion on the web visit > > > > https://groups.google.com/d/msgid/racket-dev/04pE-yKBt1FzXg9NpgHlRoMEPSp3rIKJMJ > > > > fzPRd7HBHxyF1gEwxK70y4uFONwvTXUADMdH5_Yz-Xy7fHA7XrbWe6NYYHXvE65gvPZ4H_uNU%3D%40 > > > sagegerard.com. > > > > -- > > > > You received this message because you are subscribed to the Google Groups > "Racket Developers" group. > > To unsubscribe from this group and stop receiving emails from it, send an > email to racket-dev+unsubscr...@googlegroups.com. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/racket-dev/5eab25df.1c69fb81.8f98.25f6SMTPIN_ > ADDED_MISSING%40gmr-mx.google.com. > > > -- > You received this message because you are subscribed to the Google Groups > "Racket Developers" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to racket-dev+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/racket-dev/il5M1m5pESWE_CWHdsPHg9WvQ5BhXin9sT > UJ9KMwaoKzuZldA1874eMaM5py5OFrsd23Az6Kr9mH69YblDfqrGS77flNW3BnwVzQGvygG84%3D%40 > sagegerard.com. -- You received this message because you are subscribed to the Google Groups "Racket Developers" group. 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