This folder contains my patches for various pkgsrc packages.
This README describes how to create and apply them.

= Modifying a package =

	cd /usr/pkgsrc/path-to/package
	make fetch
	cd /usr/pkgsrc/distfiles
	tar xf archived-package.tgz
	cd extracted-package/
	git init

I like tracking my modifications with Git, if only temporarily.

= Generating a patch =

	cd /path-to/extracted-package/
	git diff ... | conv -i

The resulting patch will be placed in ~/patches.

= Applying a patch =

Be sure to set the LOCALPATCHES variable in mk.conf:

	echo LOCALPATCHES = $HOME/patches >> /etc/mk.conf

After that, local patches will be applied automatically, assuming
they are formatted correctly and placed in the correct directory.

= Undoing patches =

In order to undo all patches, you need to extract the original
files from the downloaded archive.

	cd /usr/pkgsrc/path-to/package
	w=/usr/pkgsrc/distfiles/$(sed -n '/.*(\(.*\)).*/{s//\1/;p;q}' distinfo)
	cd $(dirname $w)
	tar xf $w
	cd -
	find . -name '*.orig' | while read f; do
		f=${f%.orig}
		cp $w/${f#work/} $f
	done

It is not reliable to restore the original files using the .orig
files, as multiple patches may have been applied to the same file.

= Rebuilding with new patch =

First, you may want to undo the old patches as described above.

	make do-patch
	make do-build

The first step will complain if patches have already been applied
(and not undone), but your new patch should be applied regardless.