meteor 0.9 “list” shows “new versions of these packages are available” but “update” doesn't

Question

$ meteor list
...
 * New versions of these packages are available! Run 'meteor update' to update.
$ meteor update
Figuring out the best package versions to use. This may take a moment.
This project is at the latest release which is compatible with your
current package constraints.

See the simplified version below:

It seems like there's a "conflict" between the list command which is saying there are updates available, and the update command which can not find any... how can this happen?

Answer 1

The problem seemed to be the mrt migrate-app script, which was a convenient way to upgrade... but apparently left some cruft around.

problems

1. some of the packages were guessed a bit wrong... with cmather:iron-router when it should be iron:router and more like that... (wish there was some way to filter/vote/identify "good" packages)
2. some of the packages were added with version suffixes like @2.0.0 and those were holding up the update... so list says "there are updates available" but update doesn't get them... <-- answer

solution

remove all packages, update, add them all back, without the version suffix... pretty easy to do now that they are all single lines in the .meteor/packages file:

sed -e 's/^[a-zA-Z0-9]/meteor remove &/' .meteor/packages | sed 's/\@[0-9\.]*//g' > packages-rm.sh
sed -e 's/ remove / add /' packages-rm.sh > packages-add.sh
bash packages-rm.sh
meteor list  # should be empty
meteor update
bash packages-add.sh
meteor list