Support PHP 8.0

Author: GrahamCampbell

.github/workflows/tests.yml

@@ -11,7 +11,7 @@ jobs:
 
     strategy:
       matrix:
-        php: ['7.1', '7.2', '7.3', '7.4']
+        php: ['7.1', '7.2', '7.3', '7.4', '8.0']
 
     steps:
       - name: Checkout Code
@@ -27,6 +27,22 @@ jobs:
       - name: Setup Problem Matchers
         run: echo "::add-matcher::${{ runner.tool_cache }}/phpunit.json"
 
+      - name: Remove Guzzle 6
+        uses: nick-invision/retry@v1
+        with:
+          timeout_minutes: 5
+          max_attempts: 5
+          command: composer remove php-http/guzzle6-adapter --dev --no-update --no-interaction
+        if: matrix.php >= 8
+
+      - name: Require Guzzle 7
+        uses: nick-invision/retry@v1
+        with:
+          timeout_minutes: 5
+          max_attempts: 5
+          command: composer require php-http/guzzle7-adapter --dev --no-update --no-interaction
+        if: matrix.php >= 8
+
       - name: Install Dependencies
         uses: nick-invision/retry@v1
         with:

Makefile

@@ -3,7 +3,7 @@ install:
 	@docker run -it -w /data -v ${PWD}:/data:delegated -v ~/.composer:/root/.composer:delegated --entrypoint composer --rm registry.gitlab.com/grahamcampbell/php:7.4-base bin all update
 
 phpunit:
-	@rm -f bootstrap/cache/*.php && docker run -it -w /data -v ${PWD}:/data:delegated --entrypoint vendor/bin/phpunit --rm registry.gitlab.com/grahamcampbell/php:7.4-cli
+	@docker run -it -w /data -v ${PWD}:/data:delegated --entrypoint vendor/bin/phpunit --rm registry.gitlab.com/grahamcampbell/php:7.4-cli
 
 phpstan-analyze:
 	@docker run -it -w /data -v ${PWD}:/data:delegated --entrypoint vendor/bin/phpstan --rm registry.gitlab.com/grahamcampbell/php:7.4-cli analyze

README.md

@@ -23,7 +23,7 @@ Check out the [change log](CHANGELOG.md), [releases](https://github.com/Bitbucke
 
 ## Installation
 
-This version supports [PHP](https://php.net) 7.1-7.4. To get started, simply require the project using [Composer](https://getcomposer.org). You will also need to install packages that "provide" [`psr/http-client-implementation`](https://packagist.org/providers/psr/http-client-implementation) and [`psr/http-factory-implementation`](https://packagist.org/providers/psr/http-factory-implementation).
+This version supports [PHP](https://php.net) 7.1-8.0. To get started, simply require the project using [Composer](https://getcomposer.org). You will also need to install packages that "provide" [`psr/http-client-implementation`](https://packagist.org/providers/psr/http-client-implementation) and [`psr/http-factory-implementation`](https://packagist.org/providers/psr/http-factory-implementation).
 
 ### Standard Installation
 

composer.json

@@ -10,13 +10,13 @@
         }
     ],
     "require": {
-        "php": "^7.1.3",
+        "php": "^7.1.3 || ^8.0",
         "ext-json": "*",
+        "php-http/cache-plugin": "^1.7.1",
         "php-http/client-common": "^2.3",
-        "php-http/cache-plugin": "^1.7",
         "php-http/discovery": "^1.12",
-        "php-http/httplug": "^2.1",
-        "php-http/multipart-stream-builder": "^1.1",
+        "php-http/httplug": "^2.2",
+        "php-http/multipart-stream-builder": "^1.1.2",
         "psr/cache": "^1.0",
         "psr/http-client-implementation": "^1.0",
         "psr/http-factory-implementation": "^1.0",
@@ -25,9 +25,9 @@
     },
     "require-dev": {
         "bamarni/composer-bin-plugin": "^1.4.1",
-        "php-http/guzzle6-adapter": "^2.0.1",
         "http-interop/http-factory-guzzle": "^1.0",
-        "php-http/mock-client": "^1.4"
+        "php-http/guzzle6-adapter": "^2.0.1",
+        "php-http/mock-client": "^1.4.1"
     },
     "autoload": {
         "psr-4": {