cannot open $HOME/.nimble/lib/system.nim

[evacchi]

Freshly installed copy, trying to build https://github.com/evacchi/nimoy on macOS Sierra

 Error: Traceback (most recent call last)
    ... nimble.nim(1073)         nimble
    ... nimble.nim(991)          doAction
    ... nimble.nim(973)          execHook
    ... packageparser.nim(313)   getPkgInfoFromFile
    ... packageparser.nim(288)   readPackageInfo
    ... Could not read package info file in <OMISSIS>/nimoy/nimoy.nimble;
    ...   Reading as ini file failed with:
    ...     Invalid section: .
    ...   Evaluating as NimScript file failed with:
    ...     Error: cannot open '/Users/evacchi/.nimble/lib/system.nim'.

in fact the file is missing

% ls /Users/evacchi/.nimble/lib/system.nim                                        
ls: /Users/evacchi/.nimble/lib/system.nim: No such file or directory

[dom96]

nimble -v?

[dom96]

Also, there is a relevant troubleshooting section for this https://github.com/nim-lang/nimble#troubleshooting

[evacchi]

nimble -v:

nimble v0.8.2 compiled at 2017-05-08 11:10:58

please notice that this happens with a fresh install of choosenim, which I guess is not expected.

If I install from git and put $MY_PATH_TO/nim/bin in my $PATH everything works as usual

[dom96]

Relevant IRC discussion: https://irclogs.nim-lang.org/08-05-2017.html#14:17:01

The problem is that the 0.16.0 Nim archive contains Nimble 0.8.2. This version of Nimble is unable to find the Nim standard library correctly.

Possible solutions:

• Introduce release channels for Nimble and don't install Nimble from the Nim release's archive.
  • Allow selection of Nimble versions independent of Nim version
• Give the user a warning that Nimble will fail because it's outdated.
• Wait until 0.17.0 for this to pretty much solve itself. (0.16.0 installation will still be broken of course).

[evacchi]

I think option 2 might be better; also, you may add a notice like

 You might want to try `choosenim #v${selected-version}`

if checking out from git might work