Hi Ludo,

while http://issues.guix.gnu.org/issue/36976 is going to solve the issue
for "guix download", I found that there are other cases where invalid
characters in store names appear. Thus we need a more elaborate solution
- or several solutions.

Any suggestions which cases to check and how to fix them?

E.g. "@" and "%" are not allowed in package source base names: When
building the package below, which used the "offending URL, yields an error:

guix build: error: invalid character `@' in name

Same when trying to work around this be using "…%40…".

(use-modules (guix packages) (guix download) (guix build-system gnu))

  (name "kde-l10n-ca-valencia")
  (version "14.11.80")
     (method url-fetch)
     (uri (string-append "mirror://kde//Attic/applications/"
                         version "/src/kde-l10n/"
                         "kde-l10n-ca@valencia-" version ".tar.xz"))
     (sha256 (base32
  (build-system gnu-build-system)
  (synopsis "") (description "") (license "") (home-page ""))

Hartmut Goebel

| Hartmut Goebel          | h.goe...@crazy-compilers.com               |
| www.crazy-compilers.com | compilers which you thought are impossible |

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