`panda installdeps .` replacement in zef

[ugexe]

`panda installdeps .` replacement in zef

[ugexe]

The zef replacement is zef --depsonly install .

One may ask, "Why not use a separate command, installdeps?" My current thought is that since install and installdeps would share all the same code except for a single grep (to remove the non-dependencies from the candidate list, which they still must be fetched from to get the update-to-date dependency list from its META6) that its better as an option/flag to a single command install. It is true that it would be trivial to add a thin multi MAIN('installdeps' function to delegate to multi MAIN('install', but a new command would also require documentation (including all the parameters, which would be redundant between installdeps and install, like the --["-" [build|test]]?depends flags).

Note that --depsonly appears to have stopped working as of 10 days ago (last known good revision 2ec83dd). However it has been fixed as of today.

Also note that I do not really like the name depsonly as it implies a type of exclusion or false boolean in the name itself. I'd prefer using an actual negative flag like the depends options use (--depends --/depends --test-depends --/test-depends --build-depends --/build-depends, where the default values are positive (True)). Something like --/requested (where "requested" means not a dependency) where the default is --requested, but I can't think of a word/term that would make sense to a newer user (--requested might make sense to someone intimately familiar with zef, but probably not a newer user). In other words instead of zef --depsonly install . i'd prefer zef --/requested install . Notice the negative is implied by the command, --/, instead of by the text like only or other common uses like skip and no (hence zef uses --/test instead of --skip-test or --notest).

If anyone can think of a flag to replace --depsonly that fits this scheme i'd love to hear it.

[azawawi]

Thanks for fixing it. It works perfectly now. I wish we had more example documentation (i.e. cookbook style) 👍

I vote for zef --installdeps . since it is compatible with cpanm --installdeps .. Thus, it will make the future transition to Perl 6 easier for most Perl programmers. Also we can have another alias for purists zef --install-deps ..

[azawawi]

Another related bug when there is not any dependency (i.e. depends: []), it croaks with the following error:

rakudobrew build zef
Cloning into 'zef'...
Your branch is up-to-date with 'origin/master'.
===> Testing: zef:auth('github:ugexe')
t/00-load.t ........... ok
t/identity.t .......... ok
t/utils-filesystem.t .. ok
All tests successful.
Files=3, Tests=14, 109 wallclock secs ( 0.22 usr +  0.05 sys =  0.27 CPU)
Result: PASS
===> Testing [OK] for zef:auth('github:ugexe')
===> Installing: zef:auth('github:ugexe')
===> Install [OK] for zef:auth('github:ugexe')

1 bin/ script [zef] installed to:
C:\Users\appveyor\rakudobrew\moar-2016.02\install\share\perl6\site\bin
Updating shims
Done, built zef for moar-2016.02
cd %APPVEYOR_BUILD_FOLDER%
zef --depsonly install .
All candidates are currently installed. No reason to proceed (use --force to continue anyway)
  in sub MAIN at C:\Users\appveyor\rakudobrew\moar-2016.02\install\share\perl6\site\sources\A9948E7371E0EB9AFDF1EEEB07B52A1B75537C31 line 105
  in block <unit> at C:\Users\appveyor\rakudobrew\moar-2016.02\install\share\perl6\site/resources/EA5AB4A8FDBB356B44B048C7BEA933AE333F7E49 line 1

Command exited with code 1

[azawawi]

Looks good. Thanks 👍

https://ci.appveyor.com/project/azawawi/perl6-file-which/build/1.0.15