Lock pgx versions all the way.

[epgts]

Even to the patch level! Else we get:

`pgx-0.4.4` shouldn't be used with `cargo-pgx-0.4.5`,
please use `pgx = "~0.4.5"` in your `Cargo.toml`.

[rtwalker]

thread 'main' panicked at 'cannot parse pgx version: Error("unexpected character '=' while parsing major version number")', tools/update-tester/src/installer.rs:107:10

Annnnd my get_pgx_version code from #418 is already not able to keep up

[rtwalker]

Do you want to change

timescaledb-toolkit/tools/update-tester/src/installer.rs

Lines 103 to 107 in 1420975

	cargo["dependencies"]["pgx"]
	.as_str()
	.expect("expected pgx to only have a version")
	.parse()
	.expect("cannot parse pgx version")

to

    cargo["dependencies"]["pgx"]
        .as_str()
        .expect("expected pgx to only have a version")
        .trim_start_matches(&['=', '^', '~'])
        .parse()
        .expect("cannot parse pgx version")

[epgts]

    .trim_start_matches(&['=', '^', '~'])

Looks like it! Had to phrase it as ['=', '^', '~'].as_slice() though; &['a', 'b', 'c'] has type &[char; 3] when &[char] is required (the size is part of the array type).

[rtwalker]

    .trim_start_matches(&['=', '^', '~'])

Looks like it! Had to phrase it as ['=', '^', '~'].as_slice() though; &['a', 'b', 'c'] has type &[char; 3] when &[char] is required (the size is part of the array type).

hmm weird? https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=2292f156968ec6d31468021a853aaf5d

[epgts]

hmm weird? https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=2292f156968ec6d31468021a853aaf5d

New compiler is more forgiving? ¯\_(ツ)_/¯

0 timescaledb-toolkit eg/specific-pgx% cat foo.rs                    
fn main() {
    assert_eq!("0.2.4".trim_start_matches(&['=', '^', '~']), "0.2.4");
}
0 timescaledb-toolkit eg/specific-pgx% rustc foo.rs            
error[E0277]: expected a `Fn<(char,)>` closure, found `[char; 3]`
 --> foo.rs:2:43
  |
2 |     assert_eq!("0.2.4".trim_start_matches(&['=', '^', '~']), "0.2.4");
  |                        ------------------ ^^^^^^^^^^^^^^^^ expected an `Fn<(char,)>` closure, found `[char; 3]`
  |                        |
  |                        required by a bound introduced by this call
  |
  = help: the trait `Fn<(char,)>` is not implemented for `[char; 3]`
  = note: required because of the requirements on the impl of `FnOnce<(char,)>` for `&[char; 3]`
  = note: required because of the requirements on the impl of `Pattern<'_>` for `&[char; 3]`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.
1 timescaledb-toolkit eg/specific-pgx% rustc --version
rustc 1.57.0 (f1edd0429 2021-11-29)

[epgts]

bors r+

[bors]

Build succeeded:

• Clippy Test
• Test PG 12
• Test PG 13
• Test PG 14