"Atom or quoted string expected" when including a dependency-list in dune-project

[ELLIOTTCABLE]

I've got the following dune-project:

(lang dune 2.9)
(name graphqueer)
(version 0.1)

(generate_opam_files true)

(source (github ELLIOTTCABLE/graphqueer))
(authors "ELLIOTTCABLE <[email protected]>")

(package
  (name graphqueer)
  (synopsis "Let's learn GraphQL?")
  (depends
    (ocaml (>= 4.13.1))
    (dream (>= "1.0.0~alpha2") (< 1.1))
    (dream-cli (>= 0.1.0) (< 0.2))
    (piaf (>= 0.1.0) (< 0.2))))

Unfortunately, this just yields an error:

File "dune-project", line 15, characters 4-39:
15 |     (dream (>= "1.0.0~alpha2") (< 1.1))
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Error: Atom or quoted string expected

If I attempt to have more than one dependency, it fails. What am I doing wrong?

[anuragsoni]

The constraint should be written using and

(dream (and (>= "1.0.0~alpha2") (< 1.1)))