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import: crate: Allow imports of a specific version.

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* guix/import/crate.scm (crate->guix-package): Add optional 'version'
argument and honor it.
* guix/scripts/import/crate.scm (guix-import-crate): Assume the first
argument is a spec and destructure it with
'package-name->name+version'.  Pass both to 'crate->guix-package'.
* doc/guix.texi (Invoking guix import): Document it.

Co-authored-by: Ludovic Courtès <ludo@gnu.org>
This commit is contained in:
Martin Becze
2019-09-09 11:36:04 -04:00
committed by Ludovic Courtès
parent 7c101c4c17
commit fd63ecbe05
3 changed files with 40 additions and 14 deletions
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12
doc/guix.texi
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@@ -8912,7 +8912,17 @@ in Guix.
@item crate
@cindex crate
Import metadata from the crates.io Rust package repository
@uref{https://crates.io, crates.io}.
@uref{https://crates.io, crates.io}, as in this example:
@example
guix import crate blake2-rfc
@end example
The crate importer also allows you to specify a version string:
@example
guix import crate constant-time-eq@@0.1.0
@end example
@item opam
@cindex OPAM