By having jar accepting an alternative main class, uberjar can call jar with an
additional parameter and uberjar's alternative main class won't be ignored. This
fixes#897. In addition, as jar is now responsible for adding main to :aot, the
main class will now actually be compiled. This fixes#899.
Enforces a nREPL dependency and a clojure-complete dependency for the :repl
profile. Previously, the first found :repl profile from
`project.clj`-`profiles.clj`-default was returned and merged into the real
profile. Now all :repl profiles that are found are merged into the active
profile.
The dependencies are tagged with the ^:displace tag, and as such will be
discarded if a collision occurs.
The changes made `repl-profile-in-project` fail as it did not contain
`leiningen.core.project/empty-dependencies`, which has a :reduce tag in its
metadata for handling dependency merging. The dependency merger expands the
version to its url, hence the change to a url map.
Also removed a TODO from the file, fixed by 27fe39d.
An object with the metadata flag `:displace` set signals that, if a merge
conflict appears, this object is to be discarded. Likewise, `^:replace` signals
that this object should be kept in a merge conflict.
However, previous functionality only tested if the right element had the
`:replace` flag, or if the left element had the `:displace` flag. This commit
resolves this by checking whether the left element has a `:replace` flag and the
right element has a `:displace` flag, and handles accordingly to the semantics
explained in the previous paragraph.
Whenever two elements where both has the `:displace` flag is merged, the
leftmost is picked, and their metadata is merged. Likewise for the `:replace`
flag. The elements will not lose their `:displace` and `:replace` flags, as they
have not really been preferred over another element.
The `nil?` tests have been placed at the top to reflect that nil is the lack of
a value, not a value itself. As such, elements will not be "preferred" or
"discarded" over nil/nothing.
