infer_schema! fails to connect, even though diesel setup works

[jgillich]

[nix-shell:~/devel/mp/server]$ diesel setup
Creating database: /tmp/mp.sqlite
Running migration 20160316155553

[nix-shell:~/devel/mp/server]$ cargo run
   Compiling server v0.1.0 (file:///home/jakob/devel/mp/server)
src/schema.rs:1:1: 1:40 error: failed to establish a database connection
src/schema.rs:1 infer_schema!(dotenv!("DATABASE_URL"));
                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
error: aborting due to previous error
Could not compile `server`.

To learn more, run the command again with --verbose.

[nix-shell:~/devel/mp/server]$ cat .env 
DATABASE_URL=/tmp/mp.sqlite

This even happens with DATABASE_URL=:memory:, so something isn't right. Running NixOS with a somewhat recent nightly.

Any suggestions as to how to debug this? --verbose doesn't print anything helpful unfortunately.

[jgillich]

Ah, I missed infer_schema only works with pg, so this will be fixed by #226