Raise MSRV to 1.81 with no_std

To get access to core::error::Error.

Author: madsmtm

.github/workflows/ci.yml

@@ -11,6 +11,7 @@ jobs:
         toolchain:
           - stable
           - "1.61"
+          - "1.81"
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@master
@@ -19,9 +20,11 @@ jobs:
       # All features
       - run: cargo check --all-targets --all-features
       - run: cargo test --all-features
-      # No default features
-      - run: cargo check --all-targets --no-default-features
-      - run: cargo test --no-default-features
+      # No default features. Only works on Rust 1.81
+      - if: matrix.toolchain != 1.61
+        run: cargo check --all-targets --no-default-features
+      - if: matrix.toolchain != 1.61
+        run: cargo test --no-default-features
 
   clippy-fmt:
     name: Run Clippy and format code

Cargo.toml

@@ -8,6 +8,7 @@ license = "MIT OR Apache-2.0"
 repository = "https://github.com/pyfisch/keyboard-types"
 keywords = ["keyboard", "input", "event", "webdriver"]
 edition = "2021"
+# 1.61 with `std` feature, 1.81 without.
 rust-version = "1.61"
 
 [features]

README.md

@@ -14,6 +14,13 @@ input in a cross-platform way.
 See also: [UI Events Specification](https://w3c.github.io/uievents/), and in
 particular [the section on keyboard events](https://w3c.github.io/uievents/#keys).
 
+Minimum Support Rust Version (MSRV)
+-----------------------------------
+
+The minimum supported Rust version is 1.61, or 1.81 if the `"std"` Cargo
+feature is disabled. This is not defined by policy, and may change at any time
+in a patch release.
+
 Updating Generated Code
 -----------------------
 

convert.py

@@ -111,6 +111,8 @@ def convert_key(text, file):
 
 use core::fmt::{self, Display};
 use core::str::FromStr;
+#[cfg(not(feature = "std"))]
+use core::error::Error;
 #[cfg(feature = "std")]
 use std::error::Error;
 
@@ -176,7 +178,6 @@ def convert_key(text, file):
     }
 }
 
-#[cfg(feature = "std")]
 impl Error for UnrecognizedNamedKeyError {}""", file=file)
 
 
@@ -189,6 +190,8 @@ def convert_code(text, file):
 
 use core::fmt::{self, Display};
 use core::str::FromStr;
+#[cfg(not(feature = "std"))]
+use core::error::Error;
 #[cfg(feature = "std")]
 use std::error::Error;
 
@@ -305,7 +308,6 @@ def convert_code(text, file):
     }
 }
 
-#[cfg(feature = "std")]
 impl Error for UnrecognizedCodeError {}""", file=file)
 
 

src/code.rs

@@ -6,6 +6,8 @@
 
 use core::fmt::{self, Display};
 use core::str::FromStr;
+#[cfg(not(feature = "std"))]
+use core::error::Error;
 #[cfg(feature = "std")]
 use std::error::Error;
 
@@ -949,5 +951,4 @@ impl fmt::Display for UnrecognizedCodeError {
     }
 }
 
-#[cfg(feature = "std")]
 impl Error for UnrecognizedCodeError {}

src/named_key.rs

@@ -6,6 +6,8 @@
 
 use core::fmt::{self, Display};
 use core::str::FromStr;
+#[cfg(not(feature = "std"))]
+use core::error::Error;
 #[cfg(feature = "std")]
 use std::error::Error;
 
@@ -1315,5 +1317,4 @@ impl fmt::Display for UnrecognizedNamedKeyError {
     }
 }
 
-#[cfg(feature = "std")]
 impl Error for UnrecognizedNamedKeyError {}