Crate executable dependency with Alire

I want to publish a crate of an executable (EB) whose some generated Ada sources depend of an other executable (EA) which is also a crate.

In the alire.toml of EB I add the dependance of EA and its invocation as post-fetch actions:

[[depends-on]]
EA = "1.0.0"

[[actions]]
type = "post-fetch"
command = ["EA", "-i", "-v", "Courbes_Mesg"]

But, obviously, EA is not built and found.

How to get EA built and how to invoke it properly?

I update PATH environment variable to in EA’s alire.toml like

[environment]
PATH.append = "${CRATE_ROOT}/bin"

Thanks for the tip.
I can now find EA but how to get EA built before post-fetch in EB?