Remove Hardcoded k8s-openapi Version Feature (#13)

docs/community/developers.md

@@ -23,6 +23,24 @@ We use `cargo` to build our programs:
 $ cargo build
 ```
 
+Krator is a library crate, meaning that you cannot run Krator
+directly, but must import it into other "binary" crates which can
+then be run. To see an example of using Krator in this way,
+check out the [moose example](/krator/examples/moose.rs).
+
+Krator does not configure `k8s-openapi` to use a specific version of
+Kubernetes. You will need to select a version and enable its feature
+when building your application:
+
+```
+[dependencies.k8s-openapi]
+version = "0.11"
+default-features = false
+features = ["v1_20"]
+```
+
+Krator is tested against Kubernetes v1.20. 
+
 ### Building without openssl
 
 If you are on a system that doesn't have OpenSSL (or has the incorrect version),

krator/Cargo.toml

@@ -35,7 +35,6 @@ async-trait = "0.1"
 anyhow = "1.0"
 tokio = { version = "1.0", features = ["fs", "macros", "signal"] }
 tokio-stream = { version = "0.1", features = ['sync'] }
-k8s-openapi = { version = "0.11", default-features = false, features = ["v1_20"] }
 kube = { version = "0.55", default-features = false }
 kube-runtime = { version = "0.55", default-features = false }
 serde = { version = "1.0", features = ["derive"] }
@@ -49,6 +48,15 @@ tracing = { version = "0.1", features = ['log'] }
 tracing-futures = "0.2"
 rcgen = { version = "0.8.9", features = ["x509-parser", "pem"], optional = true }
 
+[dependencies.k8s-openapi]
+version = "0.11"
+default-features = false
+
+[dev-dependencies.k8s-openapi]
+version = "0.11"
+default-features = false
+features = ["v1_20"]
+
 [dev-dependencies]
 kube-derive = "0.55"
 schemars = "0.8"