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DEBDIFF-APPLY(1) — General Commands Manual

DEBDIFF-APPLY(1)

📋 NAME

debdiff-apply — apply a debdiff to a Debian source package

🚀 Quick Reference

Use Case	Command	Description
📄 Apply a patch from a file to a source directory	debdiff-apply /path/to/source /path/to/patch.diff	Apply a debdiff file to an unpacked Debian source tree (in‑place)
📥 Apply a patch from stdin	debdiff-apply /path/to/source < patch.diff	Read the debdiff from standard input
📦 Apply a patch to a .dsc file	debdiff-apply package.diff	Apply the patch to a .dsc and produce a new .dsc
🔍 Show the source version targeted by a patch	debdiff-apply --source-version	Print the package version that the patch was created for
🎯 Show the target version after applying a patch	debdiff-apply --target-version target.dsc patch.diff	Print the new version that would be generated
🔊 Verbose output	debdiff-apply -v package.dsc patch.diff	Apply with detailed progress information

📝 SYNOPSIS

debdiff-apply [options] [orig_dsc_or_dir] [patch_file]
debdiff-apply [options] < [patch_file]

📖 DESCRIPTION

debdiff-apply takes a patchfile that describes the differences between two Debian source packages old and new, and applies it to a target Debian source package orig.

orig could either be the same as old or it could be different. patchfile is expected to be a unified diff between two Debian source trees, as what debdiff(1) normally generates.

Any changes to debian/changelog are dealt with specially, to avoid the conflicts that changelog diffs typically produce when applied naively. The exact behaviour may be tweaked in the future, so one should not rely on it.

If patchfile does not apply to orig, even after the special-casing of debian/changelog, no changes are made and debdiff-apply(1) will exit with a non-zero error code.

📦 ARGUMENTS

orig_dsc_or_dir 🎯 Target to apply the patch to. This can either be an unpacked source tree, or a .dsc file. In the former case, the directory is modified in‑place; in the latter case, a second .dsc is created. Default: . patch_file 📄 Patch file to apply, in the format output by debdiff(1). Default: /dev/stdin

⚙️ OPTIONS

-h, --help 📖 show this help message and exit -v, --verbose 🔊 Output more information -c CHANGELOG, --changelog CHANGELOG 📝 Path to debian/changelog; default: debian/changelog -D DISTRIBUTION, --distribution DISTRIBUTION 🌐 Distribution to use, if the patch doesn't already contain a changelog; default: experimental --repl 💻 Run the python REPL after processing. --source-version 🔍 Don't apply the patch; instead print out the version of the package that it is supposed to be applied to, or nothing if the patch does not specify a source version. --target-version 🎯 Don't apply the patch; instead print out the new version of the package debdiff-apply would generate, when the patch is applied to the the given target package, as specified by the other arguments.

📦 For .dsc patch targets:

--no-clean 🧹 Don't clean temporary directories after a failure, so you can examine what failed. --quilt-refresh 🔄 If the building of the new source package fails, try to refresh patches using quilt(1) then try building it again. -d DIRECTORY, --directory DIRECTORY 📁 Extract the .dsc into this directory, which won't be cleaned up after debdiff-apply(1) exits. If not given, then it will be extracted to a temporary directory.

👤 AUTHORS

debdiff-apply and this manual page were written by Ximin Luo <infinity0 AT debian.org>

Both are released under the GNU General Public License, version 3 or later.

🔗 SEE ALSO

debdiff(1)

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DEBIAN — Debian Utilities — DEBDIFF-APPLY(1)

DEBDIFF-APPLY(1) — General Commands Manual 📋 NAME 🚀 Quick Reference 📝 SYNOPSIS 📖 DESCRIPTION 📦 ARGUMENTS ⚙️ OPTIONS 👤 AUTHORS 🔗 SEE ALSO