Clojurians Log v2

i was also fighting with those conflicts lately. luckily, you don't HAVE TO necessarily fix all of them, but obviously that's an unsupported situation. in my case, the main conflict was caused by the jackson lib and it actually prevented my program to start, even locally. after applying these adjustments: https://github.com/metosin/muuntaja/issues/121 and ignoring some of the remaining conflicts, things seem to work. so far...

is it possible to undivert a datomic system, which has been diverted by datomic.dev-local/divert-system, or should i restart my repl, if i want to do another datomic.dev-local/import-cloud for example?

im also getting an error like this:

Execution error (IllegalArgumentException) at datomic.dev-local.impl/fn (impl.clj:490).
This client does not support dev-local import.

(dl/import-cloud
    {:source {:server-type :ion,
              :region      "ap-southeast-1",
              :system      "XXX",
              :endpoint    "<http://entry.XXX.ap-southeast-1.datomic.net:8182/>",
              :proxy-port  8182,
              :db-name     "DBDBDB"}
     :dest   {:server-type :dev-local
              :storage-dir :mem
              :system      "tmp"
              :db-name     "copy1"}
     :filter {}})

ah, it seems, i can't import into an in-memory dev-local system 😞 if i use (str (io/file (System/getProperty "user.home") ".datomic" "local")) instead of :mem, then the import succeeds.

in the https://docs.datomic.com/cloud/dev-local.html#import-cloud example, the source and the destination datomic :system names and :db-names are different. do i understand well, that if i want to use dl/divert-system, then my imported copy should have the same :system and :db-name? it feels very error-prone, because if i forget to call diver-system, i might end up modifying the cloud db, instead of the local copy and im not sure how would i even notice the mistake. are there any videos / articles demonstrating this workflow?

is there any reason for not supporting "dev-local import" into in-memory systems?

I filed a support ticket for this.

#3163

I'm curious if there was some thought in the past about adding a query planner to datomic (where the user-specified clause ordering is not meaningful), and if so why it was decided against - and if it hasn't, would there be consideration of adding it?