Hi Danny, Danny Milosavljevic <dan...@scratchpost.org> skribis:
>> In the former command-line package specification syntax, which is still >> supported but deprecated, “ptpython-2” was taken to mean “version 2 of >> package ‘ptpython’”. Because of this, you cannot refer to this >> “ptpython-2” package from the command-line (except with -e). >> >> The solution is to call it differently, like “ptpython2”. > > Hmm, it doesn't seem as if Guix Python itself uses that policy. Python 2.7 is > called "python-2.7" (note: dash) The *variable* is called ‘python-2.7’, but the *name* field (which is what matters here) has value "python". > Which mechanism does Guix use? Which should it use? Packages for Python 3.x are called “python-XYZ”, and packages for 2.x are called “python2-XYZ”: https://www.gnu.org/software/guix/manual/html_node/Python-Modules.html > For example right now I can't install icedtea-7: "guix package: error: > icedtea: package not found for version 7" There’s no version 7, but there are other versions available: --8<---------------cut here---------------start------------->8--- $ guix package -A icedtea icedtea 1.13.11 out,jdk,doc gnu/packages/java.scm:196:2 icedtea 2.6.6 out,jdk,doc gnu/packages/java.scm:598:4 icedtea 3.0.1 out,jdk,doc gnu/packages/java.scm:768:4 --8<---------------cut here---------------end--------------->8--- Hope this clarifies things! Ludo’.