Re: Flag day for simplified package inputs

[Jelle Licht]

Hello,

Ludovic Courtès <ludo@gnu.org> writes:

> Hi,
>
> Jelle Licht <jlicht@fsfe.org> skribis:
>
>> I will work on that. Do we already have a suitable 'bulk change' in the
>> repo? Or should we first run `guix style', and subsequently use that
>> commit as the first entry in the .git-blame-ignore-revs file?
>
> The latter I guess.

Attached what I was thinking of: I decided to go with integrating the
git-blame-ignore-revs file with our existing gitconfig situation. Let me
know what you think of the workflow and the documented changes after
running `guix style'.

>From 69926c94fb576e503d7838836cfd83066c39abcc Mon Sep 17 00:00:00 2001
From: Jelle Licht <jlicht@fsfe.org>
Date: Mon, 13 Dec 2021 16:08:22 +0100
Subject: [PATCH] maint: Ignore specified bulk changes in git blame.

* etc/git/git-blame-ignore-revs: New file.
* etc/git/gitconfig (blame): Add ignoreRevsFile.
* doc/guix.texi ("Invoking guix style"): Document git-blame-ignore-revs usage.

Signed-off-by: Jelle Licht <jlicht@fsfe.org>
---
 doc/guix.texi                 | 5 +++++
 etc/git/git-blame-ignore-revs | 0
 etc/git/gitconfig             | 3 +++
 3 files changed, 8 insertions(+)
 create mode 100644 etc/git/git-blame-ignore-revs

diff --git a/doc/guix.texi b/doc/guix.texi
index 59651f996b..0c0293cc8e 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -12769,6 +12769,11 @@ Invoking guix style
 trigger any package rebuild.
 @end table
 
+When applying automated changes to many packages, consider adding that
+particular commit hash to @file{etc/git/git-blame-ignore-revs} in a
+follow-up commit.  This will allow @command{git blame}
+(@pxref{Configuring Git}) to automatically ignore the specified commits.
+
 @node Invoking guix lint
 @section Invoking @command{guix lint}
 
diff --git a/etc/git/git-blame-ignore-revs b/etc/git/git-blame-ignore-revs
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/etc/git/gitconfig b/etc/git/gitconfig
index c9ebdc8fa8..afa598c4e3 100644
--- a/etc/git/gitconfig
+++ b/etc/git/gitconfig
@@ -1,3 +1,6 @@
+[blame]
+       ignoreRevsFile = etc/git/git-blame-ignore-revs
+
 [diff "scheme"]
        xfuncname = "^(\\(define.*)$"
 

base-commit: e765ad091d861c99eae9fdd402214a2e2e90ed4d
-- 
2.34.0

- Jelle