How do I downgrade a crate?

1

What do I have to do to downgrade a crate?

I changed Cargo.toml dependencies section but on build no new (older) version down loaded
So I hunted around and removed the crate from .cargo/registry/cache and .cargo/src then on build it downloaded not the version that I was trying to install but the original version.

Worik

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2

By default, dependencies are "caret requirements", which means that compatible upgrades are allowed. Try doing something like this in your Cargo.toml file to specify an exact version:

[dependencies]
foo = "=0.1.2"

See also: Specifying Dependencies - The Cargo Book

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3

I replaced the line
ncurses = "5.93.0"
with
ncurses = "5.91.0"
and no matter what I do version 5.93 is installed

4

Make sure you use the extra equals sign inside the version string:

ncurses = "=5.91.0"
1 Like
5

Got it. I missed the extra '='

Thanks

1 Like