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📛 NAME

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

🚀 Quick Reference

Use Case	Command	Description
Apply patch to current directory	debdiff-apply < patch.diff	Patch from stdin onto the current unpacked source tree
Apply patch to a specific directory	debdiff-apply ./src-tree < patch.diff	Patch onto a named unpacked directory
Apply patch to a .dsc file	debdiff-apply package.dsc patch.diff	Create a new patched .dsc from the original
Show source version only	debdiff-apply --source-version < patch.diff	Print the version the patch applies to
Show target version	debdiff-apply --target-version pkg.dsc < patch.diff	Show what version would be generated
Verbose output	debdiff-apply -v pkg.dsc patch.diff	More information during operation
Extract to custom directory (no cleanup)	debdiff-apply -d /tmp/build pkg.dsc patch.diff	Persistent extraction for inspection

📋 SYNOPSIS

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

ℹ️ 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(1) would generate, when the patch is applied to 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 <ity0 AT debian.org>.

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

🔗 SEE ALSO

debdiff(1)

📛 NAME 🚀 Quick Reference 📋 SYNOPSIS ℹ️ DESCRIPTION 🧾 ARGUMENTS ⚙️ OPTIONS 👥 AUTHORS 🔗 SEE ALSO