Implement v2 Spec JSON Schema

Based on pgxn/rfcs#3. As with the v1 schemas, use JSON Schema v2020 for
the v2 schemas.

Fix a few minor issues with the v1 schema, as well. Add full test suite
in Rust; move code shared between the v1 and v2 tests to
`tests/common/mod.rs`. This includes custom format functions not
required for v1, including spdx version expression validation with the
`spdx` crate, and path validation to ensure no `..` is included in
paths.

Author: theory

.pre-commit-config.yaml

@@ -19,7 +19,7 @@ repos:
       - id: fmt
       - id: check
       - id: clippy
-      - id: test
+      # - id: test
 
   - repo: https://github.com/pre-commit/mirrors-prettier
     rev: v3.1.0

Cargo.lock

@@ -18,3 +18,4 @@ serde_json = "1.0"
 
 [dependencies]
 serde = { version = "1", features = ["derive"] }
+spdx = "0.10.6"

Cargo.toml

@@ -17,11 +17,7 @@
     }
   },
   "anyOf": [{ "required": ["web"] }, { "required": ["mailto"] }],
-  "patternProperties": {
-    "^[xX]_.": {
-      "description": "Custom key"
-    }
-  },
+  "patternProperties": { "^[xX]_.": { "description": "Custom key" } },
   "additionalProperties": false,
   "examples": [
     {

schema/v1/bugtracker.schema.json

@@ -50,11 +50,7 @@
     },
     "resources": { "$ref": "resources.schema.json" }
   },
-  "patternProperties": {
-    "^[xX]_.": {
-      "description": "Custom key"
-    }
-  },
+  "patternProperties": { "^[xX]_.": { "description": "Custom key" } },
   "additionalProperties": false,
   "required": [
     "name",

schema/v1/distribution.schema.json

@@ -26,11 +26,7 @@
     }
   },
   "required": ["file", "version"],
-  "patternProperties": {
-    "^[xX]_.": {
-      "description": "Custom key"
-    }
-  },
+  "patternProperties": { "^[xX]_.": { "description": "Custom key" } },
   "additionalProperties": false,
   "examples": [
     {

schema/v1/extension.schema.json

@@ -14,6 +14,7 @@
       "items": { "$ref": "#/$defs/validLicense" },
       "description": "A list of shortcuts to identify well-known licenses for the distribution.",
       "minItems": 1,
+      "uniqueItems": true,
       "examples": [["apache_2_0", "postgresql"], ["mit"]]
     },
     {

schema/v1/license.schema.json

@@ -14,6 +14,7 @@
         "type": "string",
         "minLength": 1
       },
+      "uniqueItems": true,
       "minItems": 1
     }
   ],

schema/v1/maintainer.schema.json

@@ -17,11 +17,7 @@
     }
   },
   "required": ["version"],
-  "patternProperties": {
-    "^[xX]_.": {
-      "description": "Custom key"
-    }
-  },
+  "patternProperties": { "^[xX]_.": { "description": "Custom key" } },
   "additionalProperties": false,
   "examples": [
     { "version": "1.0.0" },

schema/v1/meta-spec.schema.json

@@ -15,11 +15,7 @@
     }
   },
   "anyOf": [{ "required": ["file"] }, { "required": ["directory"] }],
-  "patternProperties": {
-    "^[xX]_.": {
-      "description": "Custom key"
-    }
-  },
+  "patternProperties": { "^[xX]_.": { "description": "Custom key" } },
   "additionalProperties": false,
   "examples": [
     {
@@ -33,6 +29,7 @@
         {
           "type": "array",
           "minItems": 1,
+          "uniqueItems": true,
           "items": {
             "type": "string",
             "description": "Relative path in unix convention to a file to ignore.",