From: Philip McGrath <philip@philipmcgrath.com>
To: Leo Prikler <leo.prikler@student.tugraz.at>, 49280@debbugs.gnu.org
Subject: [bug#49280] [PATCH v2 1/3] gnu: racket: Update to 8.2.
Date: Mon, 19 Jul 2021 17:46:54 -0400 [thread overview]
Message-ID: <ac50e2ed-3c7f-b625-5f26-4effa83186a0@philipmcgrath.com> (raw)
In-Reply-To: <552707abf1fdcba6de34fbb5a5466dea31c8417a.camel@student.tugraz.at>
Hi,
On 7/19/21 3:46 PM, Leo Prikler wrote:
> Am Montag, den 19.07.2021, 02:31 -0400 schrieb Philip McGrath:
>> * gnu/packages/racket.scm (racket-minimal, racket): Update to 8.2.
>> * gnu/packages/racket.scm (racket-minimal)[#:arguments]: Fix
>> patch-config.rktd-lib-search-dirs phase. When a config.rktd file
>> doesn't contain an entry for `lib-search-dirs`, the default is
>> equivalent to `'(#f)`, not `'()`.
> What is the point of this value? Can we use a (sequence of) string(s)
> in its stead?
As you'd probably guess, `lib-search-dirs` and other `-search-dirs`
"config.rktd" entries specify search paths. The `#f` value is used to
specify the point at which the default search path should be spliced
into the list: a configuration file can ignore the default altogether or
exercise fine-grained control over the search order. Using `#f` also
helps to maintain something closer to a single point of control, rather
than hard-code the same string constants in several places.
Most importantly, the default value is not always a constant: for
example, command-line flags and Racket parameters control whether
user-specific paths are included.
(For `lib-search-dirs` in particular, it's also worth noting that these
are Racket-specific search directories: it does not control the use of
OS-level defaults for e.g. `dlopen`.)
The problems with omitting `#f` from `lib-search-dirs` were not very
noticeable until the patch to start using layered and tethered
installations. For a more obvious example, if `catalogs` is `'()`, `raco
pkg` won't consult any package catalogs, whereas `'(#f)` will cause it
to use the default catalogs.
The documentation for these configuration options is here:
https://docs.racket-lang.org/raco/config-file.html#(idx._(gentag._70._(lib._scribblings%2Fraco%2Fraco..scrbl)))
(As of this writing, the docs on the website are still at 8.1---the
whole package catalog is rebuilt after a new Racket release, which takes
a little while to finish. You could alternatively apply this patch and
run `lynx "file://"$(./pre-inst-env guix build
racket)"/share/doc/racket/raco/config-file.html#(idx._(gentag._70._(lib._scribblings%2Fraco%2Fraco..scrbl)))"`.)
-Philip
next prev parent reply other threads:[~2021-07-19 21:48 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-29 21:52 [bug#49280] [PATCH 0/4] gnu: racket: Add racket-next. Bootstrap from C Philip McGrath
2021-06-29 21:57 ` [bug#49280] [PATCH 1/4] gnu: racket: Fix lib-search-dirs configuration Philip McGrath
2021-06-29 21:57 ` [bug#49280] [PATCH 2/4] gnu: racket: Add racket-next and racket-next-minimal Philip McGrath
2021-07-08 21:25 ` [bug#49280] [PATCH 0/4] gnu: racket: Add racket-next. Bootstrap from C Ludovic Courtès
2021-07-18 21:35 ` Philip McGrath
2021-07-19 6:31 ` [bug#49280] [PATCH v2 1/3] gnu: racket: Update to 8.2 Philip McGrath
2021-07-19 6:31 ` [bug#49280] [PATCH v2 2/3] gnu: racket: Unbundle racket-minimal Philip McGrath
2021-07-30 21:33 ` [bug#49280] [PATCH v2 0/3] gnu: racket: Update to 8.2. Bootstrap from C Ludovic Courtès
2021-07-19 6:31 ` [bug#49280] [PATCH v2 3/3] gnu: racket-minimal: " Philip McGrath
2021-07-19 18:48 ` Philip McGrath
2021-07-19 19:46 ` [bug#49280] [PATCH v2 1/3] gnu: racket: Update to 8.2 Leo Prikler
2021-07-19 21:46 ` Philip McGrath [this message]
2021-07-20 9:40 ` Leo Prikler
2021-07-25 8:22 ` Philip McGrath
2021-07-25 13:03 ` Leo Prikler
2021-07-25 18:04 ` Philip McGrath
2021-07-30 23:05 ` bug#49280: [PATCH v2 0/3] gnu: racket: Update to 8.2. Bootstrap from C Ludovic Courtès
2021-07-30 21:22 ` [bug#49280] " Ludovic Courtès
2021-07-30 21:31 ` [bug#49280] References to unversioned source tarballs Ludovic Courtès
2021-07-30 22:08 ` Philip McGrath
2021-06-29 21:57 ` [bug#49280] [PATCH 3/4] gnu: racket-next: Unbundle racket-next-minimal Philip McGrath
2021-06-29 21:57 ` [bug#49280] [PATCH 4/4] gnu: racket-next-minimal: Bootstrap from C Philip McGrath
2021-07-08 21:43 ` [bug#49280] [PATCH 0/4] gnu: racket: Add racket-next. " Ludovic Courtès
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