bug#25508: Git hook shebangs should not be rewritten

[Leo Famulari <leo@famulari.name>]

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----- Forwarded message from John Darrington <john@darrington.wattle.id.au> -----

Date: Sun, 22 Jan 2017 14:01:24 +0100
From: John Darrington <john@darrington.wattle.id.au>
To: guix-devel@gnu.org
Subject: Not patching shebang in git hook samples ?
User-Agent: Mutt/1.5.23 (2014-03-12)

The git package ships with a number of sample hook files.  These are shell scripts and
therefore the #!/bin/sh line gets substituted at  build time.

However these files get installed into every git repostory that is created, and users
are invited to use them as templates for their own hooks.

This will be fine until both git and bash are updated.  Now the original bash is free
to be garbage collected.  If that happens, the path: 
#!/gnu/store/qkw4zrwfybxww8f56nkb6hggxambk89b-bash-4.4.0/bin/sh
will no longer exist.

I suggest what we turn off the shebang patching for the files in share/templates for git.

J'

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