Current guix added a phase "sanity-check" which tries to import the
packages. Thus $HOME needs to be set.

While this is no release version and the change is rather small, we want to
take benefit of it.

Need to remove the trailing comma, too.

Depend on newly introduced "libsequoia" package instead of the whole
"sequoia" meta-package.

The way, release builds (= non-debug builds) are build changed somewhen.

The way, release builds (= non-debug builds) are build changed somewhen.

This allows to go back if reauired more easil.y

Also update source repo.

* gnu/packages/pep.scm(java-pep-adapter): Update to 2.1.0-rc19
  [source]: Change to git repo.

* gnu/packages/pep.scm(java-pep-adapter): Update to 2.1. [source]: Change to
  git repo.

* gnu/packages/pep.scm(python-pep): Update to 2.1.3.
  [source]: Change to git repo.
  [native-inputs]: Added.
  [arguments]<phases>{unpin-versions}: New phase.

* pep/nightly.scm (libpepadapter): Update to 2.1.19. [source]: Change to
  git repo.

* gnu/packages/pep.scm(fdik-libetpan): Update to current development head.
  (sequoia4pEp): Remove.
  (pep-engine): Update to 2.1.24. [source]: Change to git repo.

The repo switched from mercurial to git. Checksum changed since the file
".hgtags" has been remove. I validated the other files to be the same.

* gnu/packages/pep.scm (yml2)[source]: Change to git repo.

This is a few, minor commits behind sequoia 0.20.0.

This is the first version actually using libpEpAdapter.

* pEp/nightly.scm (java-pep-jni-adapter): Update to 2.1.0-rc0.

* pEp/nightly.scm (python-pep): Update to 2.1.0-rc0.

* pEp/nightly.scm (libpepadapter): Update to 2.1.0-rc0.

* pEp/nightly.scm (pep-engine): Update to 2.1.0-rc0.

* pEp/nightly.scm (java-pep-jni-adapter)[inputs, native-inputs]: Sort
  alphabetically. [phases]<fix-includes>: Now unused, remove.

* pEp/nightly.scm (pep-json-adapter): New variable.

* pEp/nightly.scm (pep-engine): Update to r4652. [native-inputs]: Add
  pkg-config, sort alphabetical. [inputs]: Remove gnupg, gpgme; add nettle,
  sequoia; use "lib" output of util-linux.
  [arguments]<phases>{configure}: Change to to use seqouia as backend.

* pEp/nightly.scm (java-pep-jni-adapter)[outputs]: New element.
  [native-inputs]: Add doxygen. [arguments]<#make-flags>: New argument.
  <#phases>{install-docs]: New phase.