On Sun, Mar 10, 2019 at 2:24 PM Andreas Ronnquist <mailingli...@gusnan.se> wrote:
> On Sun, 10 Mar 2019 14:14:52 -0500, > Kent West<we...@acu.edu> wrote: > > >Example: https://packages.debian.org/sid/python3-kivy > > > >- > >> > >> dep: python3 <https://packages.debian.org/sid/python3> (<< 3.7) dep: > >> python3 <https://packages.debian.org/sid/python3> (>= 3.5~) > > > > > >The ">=" surely means "greater than or equal to", but what is "<<"? > >"less than or less than"? > > > >Even more interesting is that "aptitude install python3-kivy" only > >shows one "<" (which makes sense to me as "less than"): > > > >The following packages have unmet dependencies: > >> python3-kivy : Depends: python3 (< 3.7) but 3.7.2-1 is installed > >> > > > >and in the description of the package in the aptitude console: > > > >Depends: python3-gst-1.0, python3 (< 3.7), python3 (>= 3.5~), ... > >> > > > >It's not a typo, unless other pages have similar typos (sometimes being > >">>" - "greater than or greater than"?). > > > >Also, is the answer documented somewhere? I've researched > >unproductively for several hours. > > > > Hi! > > It's documented in Debian policy: > https://www.debian.org/doc/debian-policy/ch-relationships.html > > >The relations allowed are <<, <=, =, >= and >> for strictly earlier, > >earlier or equal, exactly equal, later or equal and strictly later, > >respectively. > > >The relations < and > were previously allowed, but they were > >confusingly defined to mean earlier/later or equal rather than > >strictly earlier/later. dpkg still supports them with a warning, but > >they are no longer allowed by Debian Policy. > > > > -- Andreas Rönnquist > mailingli...@gusnan.se > andr...@ronnquist.net > Thank you! That was driving me nuts! So essentially, aptitude's "<" is out-dated, and should be "<<", to clearly mean "earlier than" and not "earlier than or equal to"? -- Kent West <")))>< Westing Peacefully - http://kentwest.blogspot.com
