[racket] raco exe and collection path

Thanks.

raco link -d <collections-dir> is working, that is, my collections are
found, although I still have one little problem. The precedence of my
linked collection directory seems to be lower than for the built-in
collections. With the explicit collections directory setting in drracket
I'm able to set the github directory higher, which allows me to shadow
built-in collections. Now my code is loading the built in collection,
rather than the replacement I'm using.

A workaround could be to rename the replacement collection (net), which is
not a big deal, but inconvenient.

Please let me know if I'm wrong about this. Otherwise, is there a
recommended way to shadow a system collection?

Thanks, Erik.


On Tue, Oct 22, 2013 at 4:42 PM, Sam Tobin-Hochstadt
<samth at cs.indiana.edu>wrote:

> On Tue, Oct 22, 2013 at 7:36 PM, Greg Hendershott
> <greghendershott at gmail.com> wrote:
> > I think the equivalent to DrRacket's Collection Paths setting might be
> > to use the PLTCOLLECTS environment variable? See:
> >
> >     http://docs.racket-lang.org/reference/collects.html
> >
> > Also there are a number of command-line flags; I'm not sure which
> > corresponds to exactly what you need:
> >
> > $ racket -h
> > ...
> >   -X <dir>, --collects <dir> : Main collects at <dir> (or "" disables
> all)
> >   -S <dir>, --search <dir> : More collects at <dir> (after main collects)
> >   -A <dir>, --addon <dir> : Addon directory at <dir>
> >   -R <paths>, --compiled <paths> : Set compiled-file search roots to
> <paths>
> >   -C <file>, --links <file> : User-specific collection links at <file>
> > ...
>
> `-S` is the one that's like `PLTCOLLECTS`.
>
> But more generally, I would strongly encourage Erik (and others) not
> to use PLTCOLLECTS or its analogues, but instead to use the package
> system (or `raco link`).
>
> `raco link` is probably the simplest thing to do here, like so:
>
>     raco link -d /home/epearson/work/racket/github
>
> That should set up all the collections you have.
>
> Better still would be to set up a package, even one locally that you
> don't distribute.
>
> Sam
>
>
> >
> > On Tue, Oct 22, 2013 at 4:39 PM, Erik Pearson <erik at adaptations.com>
> wrote:
> >> Hi,
> >> I've just switched over to the Racket github master from 5.3.6. It is
> set up
> >> well enough that development proceeds normally. I have setup a
> collection
> >> directory which contains libraries that I'm developing and upon which my
> >> main projects depend. For DrRacket work I have used Language -> Choose
> >> Language ... -> Collection Paths to set this up, putting my collection
> path
> >> at the top so that it can override the system path if it needs to. Works
> >> great.
> >>
> >> But this Collection Paths setting does not seem to be honored by Racket
> ->
> >> Create Executable. Similarly from the command line raco exe does not
> seem to
> >> be using these preferences, nor can I figure out how to tell raco to
> use my
> >> collection directory.
> >>
> >> The specific error message I am getting is:
> >>
> >> /home/epearson/work/racket/coco/scgi-server.rkt:4:8: collection not
> found
> >>   for module path: (lib "racqueb/scgi2")
> >>   collection: "racqueb"
> >>   in collection directories:
> >>    /home/epearson/.racket/development/collects
> >>    /home/epearson/work/racket/plt/plt/racket/collects
> >>   context...:
> >>    show-collection-err
> >>    standard-module-name-resolver
> >>    standard-module-name-resolver
> >>
> >>
> /home/epearson/work/racket/plt/plt/racket/collects/compiler/embed.rkt:394:0:
> >> get-code
> >>
> >>
> /home/epearson/work/racket/plt/plt/racket/collects/compiler/embed.rkt:993:0:
> >> do-write-module-bundle
> >>
> >>
> /home/epearson/work/racket/plt/plt/racket/collects/compiler/embed.rkt:1517:51
> >>
> >>
> /home/epearson/work/racket/plt/plt/racket/collects/compiler/private/elf.rkt:190:6:
> >> temp19
> >>
> >> As you can see, is using the default collection paths, and not the one
> that
> >> I've added via DrRacket preferences, which would be
> >> /home/epearson/work/racket/github.
> >>
> >> So, the question is -- first, I guess this might be considered a bug in
> >> DrRacket -- since Create Executable is not using the same collection
> paths
> >> as the IDE? Second, is there a way to supply raco exe and distribute
> with a
> >> new collection path? Ideally I would just supply a new one which is
> added to
> >> the top of the path list, but I could also just reconstruct the
> collection
> >> path list from scratch if need be. (The docs for
> create-embedding-executable
> >> imply this.)
> >>
> >> (BTW I'm not implying that anything has changed in this regard from
> 5.3.6.
> >> In 5.3.6 I had used links to the individual libraries, but in github
> master
> >> I had switched to using the collection paths, which is less maintenance
> and
> >> allows seamless shadowing of system libraries with custom replacements.)
> >>
> >> Thanks,
> >> Erik.
> >>
> >>
> >> ____________________
> >>   Racket Users list:
> >>   http://lists.racket-lang.org/users
> >>
> > ____________________
> >   Racket Users list:
> >   http://lists.racket-lang.org/users
>



-- 
Erik Pearson
Adaptations
;; web form and function
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