Move version to jsonschema.json

Makefile

@@ -1,6 +1,7 @@
 .DEFAULT_GOAL := all
 
 JSONSCHEMA ?= jsonschema
+JQ ?= jq
 SHELLCHECK ?= shellcheck
 TAR ?= tar
 ZIP ?= zip
@@ -13,9 +14,6 @@ RMRF ?= rm -rf
 SCHEMAS = $(shell find schemas/ -type f -name '*.json')
 TESTS = $(shell find test/ -type f -name '*.json')
 
-# TODO: Add a version property to `jsonschema.json`
-VERSION = $(shell tr -d '\n\r' < VERSION)
-
 include generated.mk
 
 # TODO: Make `jsonschema fmt` automatically detect test files
@@ -46,6 +44,7 @@ test:
 
 # TODO: Add a `jsonschema pkg` command instead
 .PHONY: dist
+VERSION = $(shell $(JQ) --raw-output '.["x-version"]' jsonschema.json)
 dist:
 	$(RMRF) $@
 	$(MKDIRP) $@

generated.mk

@@ -1,5 +1,4 @@
 PYTHON ?= python3
-JQ ?= jq
 
 define MAKE_SCHEMA
 schemas/$1.json: templates/schemas/$1.jq $2.json

jsonschema.json

@@ -3,5 +3,6 @@
   "description": "A growing collection of hand-crafted high-quality schemas by Sourcemeta",
   "email": "hello@sourcemeta.com",
   "github": "sourcemeta/std",
-  "path": "./schemas"
+  "path": "./schemas",
+  "x-version": "0.2.0"
 }