Don't require target-specific dependencies unless on that target

Author: jyn514

CHANGELOG.md

@@ -5,6 +5,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+### Changed
+
+- `winapi` is no longer required on unix; `nix` is no longer required on windows.
+
 ## [0.9.0] - 2020-07-01
 
 ### Added

Cargo.toml

@@ -24,12 +24,10 @@ failure = "0.1.3"
 futures-util = "0.3.5"
 log = "0.4.6"
 tokio = { version = "0.2.21", features = ["process", "time"] }
-nix = "0.11.0"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 scopeguard = "1.0.0"
 lazy_static = "1.0.0"
-winapi = "0.3"
 tempfile = "3.0.0"
 reqwest = { version = "0.10.4", features = ["blocking"] }
 flate2 = "1"
@@ -42,6 +40,12 @@ remove_dir_all = "0.5.2"
 base64 = "0.11.0"
 getrandom = { version = "0.1.12", features = ["std"] }
 
+[target.'cfg(unix)'.dependencies]
+nix = "0.11.0"
+
+[target.'cfg(windows)'.dependencies]
+winapi = "0.3"
+
 [dev-dependencies]
 env_logger = "0.6.1"
 tiny_http = "0.7.0"