Basic problem with specifying dependencies

New to Julia
,
1

Hi there, I have this recurring error pattern which I can’t seem to “grok” from the Packages documentation so I’ll ask. I load my package with import MyPackage, then I get

 Warning: Package MyPackage does not have Dates in its dependencies:
│ - If you have MyPackage checked out for development and have
│   added Dates as a dependency but haven't updated your primary
│   environment's manifest file, try `Pkg.resolve()`.
│ - Otherwise you may need to report an issue with MyPackage
└ Loading Dates into MyPackage from project dependency, future warnings for MyPackage are suppressed.
ERROR: LoadError: LoadError: ArgumentError: Package MyPackage does not have OrderedCollections in its dependencies:
- If you have MyPackage checked out for development and have
  added OrderedCollections as a dependency but haven't updated your primary
  environment's manifest file, try `Pkg.resolve()`.
- Otherwise you may need to report an issue with MyPackage

The package is in local development using dev myPackage. I then use activate MyPackage in Package mode (because I launch Julia from a shortcut where I can’t specify a specific project). Then, I add those packages: add Dates, add OrderedCollections, etc. Then, I re-import MyPackage and it works.

Then, after I close and restart Julia (I’m on Windows), I get those same errors again. I check both my Manifest.toml and Project.toml files and both dependencies are listed in there. What am I doing wrong?

Also, why is the first instance of the problem (for Dates) a warning, but the second one (for OrderedCollections) an error?

2

after adding those to your pkg’s Project.toml, you need to do resolve in your main environment, not when active MyPackage. You can do an empty ]activate to come back

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