Enhancement: Add support for PHP 8.0

.github/CONTRIBUTING.md

@@ -10,18 +10,6 @@ For details, take a look at the following workflow configuration files:
 - [`workflows/renew.yaml`](workflows/renew.yaml)
 - [`workflows/triage.yaml`](workflows/triage.yaml)
 
-## Backward-Compatibility Analysis
-
-We use [`roave/backward-compatibility-check`](https://github.com/Roave/BackwardCompatibilityCheck) to prevent breaking backwards-compatibility.
-
-Run
-
-```sh
-make backward-compatibility-analysis
-```
-
-to run a backward-compatibility analysis.
-
 ## Coding Standards
 
 We use [`ergebnis/composer-normalize`](https://github.com/ergebnis/composer-normalize) to normalize `composer.json`.

.github/workflows/integrate.yaml

@@ -9,58 +9,6 @@ on: # yamllint disable-line rule:truthy
       - "main"
 
 jobs:
-  backward-compatibility-analysis:
-    name: "Backward-Compatibility Analysis"
-
-    runs-on: "ubuntu-latest"
-
-    timeout-minutes: 5
-
-    strategy:
-      matrix:
-        php-version:
-          - "8.1"
-
-        dependencies:
-          - "locked"
-
-    steps:
-      - name: "Checkout"
-        uses: "actions/[email protected]"
-        with:
-          fetch-depth: 0
-
-      - name: "Set up PHP"
-        uses: "shivammathur/[email protected]"
-        with:
-          coverage: "none"
-          extensions: "none, bcmath, ctype, curl, dom, intl, json, mbstring, phar, simplexml, tokenizer, xml, xmlwriter"
-          php-version: "${{ matrix.php-version }}"
-
-      - name: "Set up problem matchers for PHP"
-        run: "echo \"::add-matcher::${{ runner.tool_cache }}/php.json\""
-
-      - name: "Validate composer.json and composer.lock"
-        run: "composer validate --ansi --strict"
-
-      - name: "Determine composer cache directory"
-        uses: "ergebnis/.github/actions/composer/[email protected]"
-
-      - name: "Cache dependencies installed with composer"
-        uses: "actions/[email protected]"
-        with:
-          path: "${{ env.COMPOSER_CACHE_DIR }}"
-          key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('composer.lock') }}"
-          restore-keys: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-"
-
-      - name: "Install ${{ matrix.dependencies }} dependencies with composer"
-        uses: "ergebnis/.github/actions/composer/[email protected]"
-        with:
-          dependencies: "${{ matrix.dependencies }}"
-
-      - name: "Run backward-compatibility analysis with roave/backward-compatibility-check"
-        run: "vendor/bin/roave-backward-compatibility-check --ansi --format=github-actions"
-
   code-coverage:
     name: "Code Coverage"
 

.phive/phars.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phive xmlns="https://phar.io/phive">
-    <phar name="composer-normalize" version="^2.41.0" installed="2.41.0" location="./.phive/composer-normalize" copy="false"/>
-    <phar name="composer-require-checker" version="^4.7.1" installed="4.7.1" location="./.phive/composer-require-checker" copy="false"/>
+    <phar name="composer-normalize" version="^2.31.0" installed="2.31.0" location="./.phive/composer-normalize" copy="false"/>
+    <phar name="composer-require-checker" version="^4.4.0" installed="4.4.0" location="./.phive/composer-require-checker" copy="false"/>
 </phive>

.php-cs-fixer.php

@@ -26,7 +26,7 @@
 
 $license->save();
 
-$ruleSet = PhpCsFixer\Config\RuleSet\Php81::create()
+$ruleSet = PhpCsFixer\Config\RuleSet\Php80::create()
     ->withHeader($license->header())
     ->withRules(PhpCsFixer\Config\Rules::fromArray([
         'strict_comparison' => false,

Makefile

@@ -1,10 +1,6 @@
 .PHONY: it
 it: refactoring coding-standards security-analysis static-code-analysis tests ## Runs the refactoring, coding-standards, security-analysis, static-code-analysis, and tests targets
 
-.PHONY: backward-compatibility-analysis
-backward-compatibility-analysis: vendor ## Runs a backward-compatibility analysis with roave/backward-compatibility-check
-	vendor/bin/roave-backward-compatibility-check
-
 .PHONY: code-coverage
 code-coverage: vendor ## Collects coverage from running unit tests with phpunit/phpunit
 	vendor/bin/phpunit --configuration=test/Unit/phpunit.xml --coverage-text

composer.json

@@ -22,19 +22,18 @@
     "security": "https://github.com/ergebnis/json-pointer/blob/main/.github/SECURITY.md"
   },
   "require": {
-    "php": "~8.1.0 || ~8.2.0 || ~8.3.0"
+    "php": "~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0"
   },
   "require-dev": {
     "ergebnis/data-provider": "^3.2.0",
     "ergebnis/license": "^2.4.0",
-    "ergebnis/php-cs-fixer-config": "~6.20.0",
+    "ergebnis/php-cs-fixer-config": "^6.20.0",
     "ergebnis/phpunit-slow-test-detector": "^2.9.0",
     "fakerphp/faker": "^1.23.1",
-    "infection/infection": "~0.27.9",
-    "phpunit/phpunit": "^10.5.9",
+    "infection/infection": "~0.26.19",
+    "phpunit/phpunit": "^9.6.16",
     "psalm/plugin-phpunit": "~0.18.4",
     "rector/rector": "~0.19.2",
-    "roave/backward-compatibility-check": "^8.6.0",
     "vimeo/psalm": "^5.20.0"
   },
   "autoload": {
@@ -56,7 +55,7 @@
       "abandoned": "report"
     },
     "platform": {
-      "php": "8.1.26"
+      "php": "8.0.30"
     },
     "preferred-install": "dist",
     "sort-packages": true