From: Maxime Devos <maximedevos@telenet.be>
To: Maxim Cournoyer <maxim.cournoyer@gmail.com>
Cc: 49149@debbugs.gnu.org
Subject: [bug#49149] [PATCH 4/7] pack: Improve naming of the packs store file names.
Date: Wed, 23 Jun 2021 12:22:14 +0200 [thread overview]
Message-ID: <a3a2895d9404098862d34813015bd0e8f3c30be3.camel@telenet.be> (raw)
In-Reply-To: <87k0mm2dzu.fsf@gmail.com>
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> I'm not sure how the expansion would be usable in the module it is
> defined? It seems I could manage to get 'manifest->friendly-name' to be
> a procedure returning a gexp, but that gexp wouldn't be readily usable
> in that module (it could only be used when gexp-unquote from inside
> another G-Exp), and the expansion in the macro above doesn't bind any
> identifier, unless I'm missing something?
The macro does two things: define a procedure manifest->friendly-name
that returns a string.
(define (manifest->friendly-name manifest)
"Return a friendly name computed from the entries in MANIFEST, a
<manifest> object."
(let loop ((names (map manifest-entry-name
(manifest-entries manifest))))
(define str (string-join names "-"))
(if (< (string-length str) 40)
str
(match names
((_) str)
((names ... _) (loop names))))))) ;drop one entry
and also define a G-exp define-manifest->friendly-name
(define define-manifest->friendly-nam
#~(define (manifest->friendly-name manifes)
"Return a friendly name [...]"
[...])
Testing from a REPL:
$ guix repl
(use-modules (guix gexp) (ice-9 match) (guix profiles))
(define-syntax define-gexp-and-expand
(syntax-rules ()
((_ variable code) ; code* ... turned out to be unnecessary
(begin (define variable #~code)
code))))
(define-gexp-and-expand define-manifest->friendly-name
(define (manifest->friendly-name manifest)
"Return a friendly name computed from the entries in MANIFEST, a
<manifest> object."
(let loop ((names (map manifest-entry-name
(manifest-entries manifest))))
(define str (string-join names "-"))
(if (< (string-length str) 40)
str
(match names
((_) str)
((names ... _) (loop names))))))) ;drop one entry
$ define-manifest->friendly-name
$3 = #<gexp (define (manifest->friendly-name manifest) "Return a friendly name computed from the entries in MANIFEST, a\n <manifest> object." (let loop ((names (map manifest-entry-name (manifest-
entries manifest)))) (define str (string-join names "-")) (if (< (string-length str) 40) str (match names ((_) str) ((names ... _) (loop names)))))) 7f4b3c5ee5a0>
$ (manifest->friendly-name (specifications->manifest '("guile")))
$8 = "guile"
Seems to work.
Greetings,
Maxime.
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next prev parent reply other threads:[~2021-06-23 10:23 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-21 6:10 [bug#49149] [PATCH 0/7] Add deb format for guix pack Maxim Cournoyer
2021-06-21 6:11 ` [bug#49149] [PATCH 1/7] pack: Extract builder code from self-contained-tarball Maxim Cournoyer
2021-06-21 6:11 ` [bug#49149] [PATCH] tentatively reuse rlib for cargo-build-system Maxim Cournoyer
2021-06-21 20:28 ` Maxim Cournoyer
2021-06-21 6:12 ` [bug#49149] [PATCH 2/7] pack: Factorize base tar options Maxim Cournoyer
2021-06-21 6:12 ` [bug#49149] [PATCH 3/7] pack: Fix typo Maxim Cournoyer
2021-06-21 6:12 ` [bug#49149] [PATCH 4/7] pack: Improve naming of the packs store file names Maxim Cournoyer
2021-06-21 18:11 ` Maxime Devos
2021-06-22 14:03 ` Maxim Cournoyer
2021-06-23 10:22 ` Maxime Devos [this message]
2021-06-24 4:40 ` [bug#49149] [PATCH v2 1/7] pack: Extract builder code from self-contained-tarball Maxim Cournoyer
2021-06-24 4:40 ` [bug#49149] [PATCH v2 2/7] pack: Factorize base tar options Maxim Cournoyer
2021-06-24 4:40 ` [bug#49149] [PATCH v2 3/7] pack: Fix typo Maxim Cournoyer
2021-06-24 4:40 ` [bug#49149] [PATCH v2 4/7] pack: Improve naming of the packs store file names Maxim Cournoyer
2021-06-26 5:03 ` [bug#49149] [PATCH 0/7] Add deb format for guix pack Maxim Cournoyer
2021-06-30 10:13 ` Ludovic Courtès
2021-06-30 18:36 ` Maxim Cournoyer
2021-07-01 13:26 ` Ludovic Courtès
2021-07-04 3:21 ` Maxim Cournoyer
2021-07-05 16:14 ` Ludovic Courtès
2021-07-05 20:42 ` Maxim Cournoyer
2021-06-24 4:40 ` [bug#49149] [PATCH v2 5/7] pack: Prevent duplicate files in tar archives Maxim Cournoyer
2021-06-24 4:40 ` [bug#49149] [PATCH v2 6/7] tests: pack: Fix compressor extension Maxim Cournoyer
2021-06-24 4:40 ` [bug#49149] [PATCH v2 7/7] pack: Add support for the deb format Maxim Cournoyer
2021-06-26 16:58 ` Maxime Devos
2021-06-29 19:20 ` bug#49149: [PATCH 0/7] Add deb format for guix pack Maxim Cournoyer
2021-06-30 10:10 ` [bug#49149] " Ludovic Courtès
2021-06-24 4:44 ` [bug#49149] [PATCH 4/7] pack: Improve naming of the packs store file names Maxim Cournoyer
2021-06-23 21:16 ` [bug#49149] [PATCH 0/7] Add deb format for guix pack Ludovic Courtès
2021-06-21 6:12 ` [bug#49149] [PATCH 5/7] pack: Prevent duplicate files in tar archives Maxim Cournoyer
2021-06-30 10:06 ` [bug#49149] [PATCH 0/7] Add deb format for guix pack Ludovic Courtès
2021-06-30 18:16 ` Maxim Cournoyer
2021-07-01 13:24 ` Ludovic Courtès
2021-06-21 6:12 ` [bug#49149] [PATCH 6/7] tests: pack: Fix compressor extension Maxim Cournoyer
2021-06-21 6:12 ` [bug#49149] [PATCH 7/7] pack: Add support for the deb format Maxim Cournoyer
2021-06-21 16:44 ` [bug#49149] Add deb format for guix pack jgart via Guix-patches via
2021-06-23 21:28 ` [bug#49149] [PATCH 0/7] " Ludovic Courtès
2021-06-29 17:49 ` Maxim Cournoyer
2021-06-30 9:15 ` Ludovic Courtès
2021-06-30 13:49 ` zimoun
2021-06-30 15:06 ` zimoun
2021-06-30 16:55 ` Maxim Cournoyer
2021-06-30 16:54 ` Maxim Cournoyer
2021-06-30 17:28 ` Maxim Cournoyer
2021-06-30 17:36 ` Maxim Cournoyer
2021-06-30 17:47 ` zimoun
2021-06-30 19:20 ` Maxim Cournoyer
2021-07-01 13:08 ` zimoun
2021-06-30 16:42 ` Maxim Cournoyer
2021-07-01 13:20 ` Ludovic Courtès
2021-07-01 13:52 ` zimoun
2021-07-05 16:17 ` Ludovic Courtès
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