Broadened the dependency spec on Nix.

For better compatibility with downstream consumers that have various
requirements.

Author: asomers

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+### Changed
+- Broadened the dependency spec on Nix, for better compatibility with
+  downstream consumers that have various requirements. (#157)
+
 ## [0.3.0] - 2024-10-01
 
 ## Changed

Cargo.toml

@@ -40,7 +40,7 @@ byteorder = "1.4.3"
 libc = "0.2.155"
 log="0.4.8"
 sysctl = ">=0.5.4, < 0.7"
-nix = { version = "0.29.0", default-features = false, features = ["socket"] }
+nix = { version = ">=0.28.0, < 0.31", default-features = false, features = ["socket"] }
 rctl = "0.3.0"
 strum_macros = "0.26.0"
 serde = { version="1.0.113", features = ["derive"], optional=true}