[BUG] Build error when using `ncurses-backend`
bug
**Describe the bug**
When trying to build my [File Editor TUI using](https://github.com/nwrenger/omega) `ncurses-backend` I am getting an implementation error related to `cursive v0.21.1`. As I upgraded to `cursive v0.21.1`, this error does not occur in `cursive v0.20.0`.
**To Reproduce**
Build any app on MacOS using `ncurses-backend` this error occurs.
**Expected behavior**
A working Build.
**Environment**
* MacOS
* Backend used: `ncurses`
* Current locale:
```
LANG=""
LC_COLLATE="C"
LC_CTYPE="UTF-8"
LC_MESSAGES="C"
LC_MONETARY="C"
LC_NUMERIC="C"
LC_TIME="C"
LC_ALL=
```
* Cursive version: `v0.21.1`
**Additional context**
Error trace:
```
Compiling cursive v0.21.1
error[E0425]: cannot find value `BUTTON5_DOUBLE_CLICKED` in crate `ncurses`
--> /Users/nils/.cargo/registry/src/index.crates.io-6f17d22bba15001f/cursive-0.21.1/src/backends/curses/n.rs:267:52
|
267 | (mevent.bstate == ncurses::BUTTON5_DOUBLE_CLICKED as mmask_t)
| ^^^^^^^^^^^^^^^^^^^^^^ help: a constant with a similar name exists: `BUTTON1_DOUBLE_CLICKED`
|
::: /Users/nils/Documents/code/sys/omega/target/debug/build/ncurses-0d2a84155b7472a5/out/raw_constants.rs:129:1
|
129 | pub const BUTTON1_DOUBLE_CLICKED: i32 = 8;
| ------------------------------------- similarly named constant `BUTTON1_DOUBLE_CLICKED` defined here
error[E0531]: cannot find unit struct, unit variant or constant `BUTTON5_RELEASED` in crate `ncurses`
--> /Users/nils/.cargo/registry/src/index.crates.io-6f17d22bba15001f/cursive-0.21.1/src/backends/curses/n.rs:437:18
|
437 | ncurses::BUTTON5_RELEASED
| ^^^^^^^^^^^^^^^^ help: a constant with a similar name exists: `BUTTON1_RELEASED`
|
::: /Users/nils/Documents/code/sys/omega/target/debug/build/ncurses-0d2a84155b7472a5/out/raw_constants.rs:126:1
|
126 | pub const BUTTON1_RELEASED: i32 = 1;
| ------------------------------- similarly named constant `BUTTON1_RELEASED` defined here
error[E0531]: cannot find unit struct, unit variant or constant `BUTTON5_PRESSED` in crate `ncurses`
--> /Users/nils/.cargo/registry/src/index.crates.io-6f17d22bba15001f/cursive-0.21.1/src/backends/curses/n.rs:438:20
|
438 | | ncurses::BUTTON5_PRESSED
| ^^^^^^^^^^^^^^^ help: a constant with a similar name exists: `BUTTON1_PRESSED`
|
::: /Users/nils/Documents/code/sys/omega/target/debug/build/ncurses-0d2a84155b7472a5/out/raw_constants.rs:127:1
|
127 | pub const BUTTON1_PRESSED: i32 = 2;
| ------------------------------ similarly named constant `BUTTON1_PRESSED` defined here
error[E0531]: cannot find unit struct, unit variant or constant `BUTTON5_CLICKED` in crate `ncurses`
--> /Users/nils/.cargo/registry/src/index.crates.io-6f17d22bba15001f/cursive-0.21.1/src/backends/curses/n.rs:439:20
|
439 | | ncurses::BUTTON5_CLICKED
| ^^^^^^^^^^^^^^^ help: a constant with a similar name exists: `BUTTON1_CLICKED`
|
::: /Users/nils/Documents/code/sys/omega/target/debug/build/ncurses-0d2a84155b7472a5/out/raw_constants.rs:128:1
|
128 | pub const BUTTON1_CLICKED: i32 = 4;
| ------------------------------ similarly named constant `BUTTON1_CLICKED` defined here
error[E0531]: cannot find unit struct, unit variant or constant `BUTTON5_DOUBLE_CLICKED` in crate `ncurses`
--> /Users/nils/.cargo/registry/src/index.crates.io-6f17d22bba15001f/cursive-0.21.1/src/backends/curses/n.rs:440:20
|
440 | | ncurses::BUTTON5_DOUBLE_CLICKED
| ^^^^^^^^^^^^^^^^^^^^^^ help: a constant with a similar name exists: `BUTTON1_DOUBLE_CLICKED`
|
::: /Users/nils/Documents/code/sys/omega/target/debug/build/ncurses-0d2a84155b7472a5/out/raw_constants.rs:129:1
|
129 | pub const BUTTON1_DOUBLE_CLICKED: i32 = 8;
| ------------------------------------- similarly named constant `BUTTON1_DOUBLE_CLICKED` defined here
error[E0531]: cannot find unit struct, unit variant or constant `BUTTON5_TRIPLE_CLICKED` in crate `ncurses`
--> /Users/nils/.cargo/registry/src/index.crates.io-6f17d22bba15001f/cursive-0.21.1/src/backends/curses/n.rs:441:20
|
441 | | ncurses::BUTTON5_TRIPLE_CLICKED => MouseButton::Button5,
| ^^^^^^^^^^^^^^^^^^^^^^ help: a constant with a similar name exists: `BUTTON1_TRIPLE_CLICKED`
|
::: /Users/nils/Documents/code/sys/omega/target/debug/build/ncurses-0d2a84155b7472a5/out/raw_constants.rs:130:1
|
130 | pub const BUTTON1_TRIPLE_CLICKED: i32 = 16;
| ------------------------------------- similarly named constant `BUTTON1_TRIPLE_CLICKED` defined here
error[E0531]: cannot find unit struct, unit variant or constant `BUTTON5_PRESSED` in crate `ncurses`
--> /Users/nils/.cargo/registry/src/index.crates.io-6f17d22bba15001f/cursive-0.21.1/src/backends/curses/n.rs:466:18
|
466 | ncurses::BUTTON5_PRESSED => f(MouseEvent::WheelDown),
| ^^^^^^^^^^^^^^^ help: a constant with a similar name exists: `BUTTON1_PRESSED`
|
::: /Users/nils/Documents/code/sys/omega/target/debug/build/ncurses-0d2a84155b7472a5/out/raw_constants.rs:127:1
|
127 | pub const BUTTON1_PRESSED: i32 = 2;
| ------------------------------ similarly named constant `BUTTON1_PRESSED` defined here
Some errors have detailed explanations: E0425, E0531.
For more information about an error, try `rustc --explain E0425`.
error: could not compile `cursive` (lib) due to 7 previous errors
```
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