Hello, I'm unsuccessful in building the puredata 0.46-2 .deb package for Raspberry Pi as per IOhannes' description:

On Wed, Jun 25, 2014 at 9:56 AM, IOhannes m zmölnig <pd-list@lists.iem.at> wrote:

if your distro ships an older version you can do:
$ dget
http://ftp.de.debian.org/debian/pool/main/p/puredata/puredata_0.45.4-2.dsc
$ cd puredata-0.45.4/
$ sudo aptitude install devscripts
$ sudo mk-build-deps -i -r debian/control
$ dpkg-buildpackage -rfakeroot

this will create the puredata package(s) using the autotools method.
you can then install it using:
$ sudo dpkg -i ../puredata*_0.45.4-2_*.deb

Devscripts had to be installed first to use dget. After downloading the files with dget I got the error:
"gpg: Can't check signature: public key not found
Validation FAILED"

I had created a key with gpg --gen-key, but that didn't help. The files were downloaded nonetheless so I unpacked them and did the 'make-build-debs' step which resulted in the creation and installation of package 'puredata-build-deps'. The building stage however resulted in a plethora of errors, summarized at the end as:
"dpkg-source: error: unrepresentable changes to source"

Is this related to the validation failure?

Katja