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| author | Ludovic Courtès <ludovic.courtes@inria.fr> | 2020-06-22 16:40:18 +0200 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2020-06-23 00:03:08 +0200 |
| commit | 2f562699ea936f9639ccf5deef2e7b458a7426bf (patch) | |
| tree | 751eb1e768875f694febee98ba2071d98faccdfa /doc | |
| parent | ab83e1f054ef8c9ce1486a56f2484430630d42a3 (diff) | |
doc: cookbook: Mention "guix hash -rx" for Git checkouts.
* doc/guix-cookbook.texi (Extended example): Mention "guix hash -rx ."
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/guix-cookbook.texi | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/doc/guix-cookbook.texi b/doc/guix-cookbook.texi index 31c4cd4121..efafbd9d93 100644 --- a/doc/guix-cookbook.texi +++ b/doc/guix-cookbook.texi @@ -852,6 +852,24 @@ version when packaging programs for a specific commit, following the Guix contributor guidelines (@pxref{Version Numbers,,, guix, GNU Guix Reference Manual}). +How does one obtain the @code{sha256} hash that's in there, you ask? By +invoking @command{guix hash} on a checkout of the desired commit, along +the lines: + +@example +git clone https://github.com/libgit2/libgit2/ +cd libgit2 +git checkout v0.26.6 +guix hash -rx . +@end example + +@command{guix hash -rx} computes a SHA256 hash over the whole directory, +excluding the @file{.git} sub-directory (@pxref{Invoking guix hash,,, +guix, GNU Guix Reference Manual}). + +In the future, @command{guix download} will hopefully be able to do +these steps for you, just like it does for regular downloads. + @subsubsection Snippets Snippets are quoted (i.e. non-evaluated) Scheme code that are a means of patching |