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Don't recommend 'kind: List' (#183)
… as suggested by https://github.com/dhall-lang/dhall-kubernetes/issues/125#issuecomment-1172302306 Instead, the `README` only recommends using a `List Resource`
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README.md
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README.md
@ -269,33 +269,29 @@ spec:
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#### Can I generate a YAML file with many objects in it?
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It is usual for k8s YAML files to include multiple objects separated by `---` ("documents" in YAML lingo),
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so you might want to do it too.
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If the objects have the same type, this is very easy: you return a Dhall list containing the
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objects, and use the `--documents` flag, e.g.:
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```bash
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dhall-to-yaml --documents <<< "let a = ./examples/deploymentSimple.dhall in [a, a]"
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```
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If the objects are of different type, it's not possible to have separate documents in the same YAML file.
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However, since [k8s has a builtin `List` type for these cases](https://github.com/kubernetes/kubernetes/blob/master/hack/testdata/list.yaml),
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it's possible to use it together with the [union type of all k8s types that we generate][typesUnion].
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So if we want to deploy e.g. a Deployment and a Service together, we can do:
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Kubernetes YAML files commonly include multiple resources as documents separated
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by `---`. To generate a single file with a different resource type per
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document, you'll need to produce a `List Resource` (where `Resource` is a
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union provided by `dhall-kubernetes` that can wrap any resource type), like
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this:
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```dhall
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let k8s = ./typesUnion.dhall
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let k8s = ./package.dhall
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in
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{ apiVersion = "v1"
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, kind = "List"
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, items =
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[ k8s.Deployment ./my-deployment.dhall
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, k8s.Service ./my-service.dhall
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]
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}
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in [ k8s.Resource.Deployment k8s.Deployment::{
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, …
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}
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, k8s.Resource.Service k8s.Service::{
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, …
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}
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]
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```
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… and then render the `List` of `Resource`s using the `--documents` flag, like
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this:
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```bash
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dhall-to-yaml --documents --file ./resources.dhall
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```
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## Projects Using `dhall-kubernetes`
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