Remove thiserror from bevy_text (#15762)

# Objective

- Contributes to #15460

## Solution

- Removed `thiserror` from `bevy_text`

crates/bevy_text/Cargo.toml

@@ -30,7 +30,11 @@ bevy_utils = { path = "../bevy_utils", version = "0.15.0-dev" }
 
 # other
 cosmic-text = { version = "0.12", features = ["shape-run-cache"] }
-thiserror = "1.0"
+derive_more = { version = "1", default-features = false, features = [
+  "error",
+  "from",
+  "display",
+] }
 serde = { version = "1", features = ["derive"] }
 unicode-bidi = "0.3.13"
 sys-locale = "0.3.0"

crates/bevy_text/src/error.rs

@@ -1,17 +1,19 @@
 use cosmic_text::CacheKey;
-use thiserror::Error;
+use derive_more::derive::{Display, Error};
 
-#[derive(Debug, PartialEq, Eq, Error)]
+#[derive(Debug, PartialEq, Eq, Error, Display)]
 /// Errors related to the textsystem
 pub enum TextError {
     /// Font was not found, this could be that the font has not yet been loaded, or
     /// that the font failed to load for some other reason
-    #[error("font not found")]
+    #[display("font not found")]
     NoSuchFont,
     /// Failed to add glyph to a newly created atlas for some reason
-    #[error("failed to add glyph to newly-created atlas {0:?}")]
+    #[display("failed to add glyph to newly-created atlas {_0:?}")]
+    #[error(ignore)]
     FailedToAddGlyph(u16),
     /// Failed to get scaled glyph image for cache key
-    #[error("failed to get scaled glyph image for cache key: {0:?}")]
+    #[display("failed to get scaled glyph image for cache key: {_0:?}")]
+    #[error(ignore)]
     FailedToGetGlyphImage(CacheKey),
 }

crates/bevy_text/src/font_loader.rs

@@ -1,21 +1,19 @@
 use crate::Font;
 use bevy_asset::{io::Reader, AssetLoader, LoadContext};
-use thiserror::Error;
+use derive_more::derive::{Display, Error, From};
 
 #[derive(Default)]
 /// An [`AssetLoader`] for [`Font`]s, for use by the [`AssetServer`](bevy_asset::AssetServer)
 pub struct FontLoader;
 
 /// Possible errors that can be produced by [`FontLoader`]
 #[non_exhaustive]
-#[derive(Debug, Error)]
+#[derive(Debug, Error, Display, From)]
 pub enum FontLoaderError {
     /// The contents that could not be parsed
-    #[error(transparent)]
-    Content(#[from] cosmic_text::ttf_parser::FaceParsingError),
+    Content(cosmic_text::ttf_parser::FaceParsingError),
     /// An [IO](std::io) Error
-    #[error(transparent)]
-    Io(#[from] std::io::Error),
+    Io(std::io::Error),
 }
 
 impl AssetLoader for FontLoader {