- Enabled overriding the printed version using an environment variable.

- Removed version from required property in the config object.

cmd/centry/environment.go

@@ -0,0 +1,18 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"strings"
+)
+
+func overrideFromEnvironment(runtime *Runtime) {
+	context := runtime.context
+	cli := runtime.cli
+	envVersionName := fmt.Sprintf("%s_VERSION", strings.ToUpper(context.manifest.Config.Name))
+	envVersion := os.Getenv(envVersionName)
+	if envVersion != "" {
+		runtime.events = append(runtime.events, fmt.Sprintf("Setting the version from environment variable \"%s\"", envVersionName))
+		cli.Version = envVersion
+	}
+}

cmd/centry/runtime.go

@@ -79,6 +79,9 @@ func NewRuntime(inputArgs []string, context *Context) (*Runtime, error) {
 		},
 	}
 
+	// Environment overrides
+	overrideFromEnvironment(runtime)
+
 	// Register internal commands
 	registerInternalCommands(runtime)
 

examples/centry/centry.yaml

@@ -75,7 +75,7 @@ options:
 config:
   name: centry
   description: A tool for building declarative CLI's over bash scripts, written in go
-  version: 1.0.0
+  version: 1.0.0 # NOTE: This can also be set from an environment variable
   log:
     level: info
     prefix: '[centry] '

schemas/manifest.json

@@ -58,7 +58,7 @@
         "hideInternalCommands": { "type": "boolean" },
         "hideInternalOptions": { "type": "boolean" }
       },
-      "required": [ "name", "version" ]
+      "required": [ "name" ]
     }
   },
   "required": [ "commands", "config" ]

test/data/runtime_test_default_config.yaml

@@ -1,4 +1,3 @@
 commands: []
 config:
   name: name
-  version: version