Allow php 8 tests to run, require latest semver dev

.github/workflows/continuous-integration.yml

@@ -56,7 +56,7 @@ jobs:
             dependencies: locked
             experimental: false
           - php-version: 8.0
-            dependencies: highest
+            dependencies: highest-ignore
             os: ubuntu-latest
             experimental: true
 
@@ -87,6 +87,10 @@ jobs:
         if: "matrix.dependencies == 'highest'"
         run: "composer config platform --unset && composer update ${{ env.COMPOSER_FLAGS }}"
 
+      - name: "Install highest dependencies from composer.json using composer binary provided by system"
+        if: "matrix.dependencies == 'highest-ignore'"
+        run: "composer config platform --unset && composer update ${{ env.COMPOSER_FLAGS }} --ignore-platform-reqs"
+
       - name: "Install lowest dependencies from composer.json using composer binary provided by system"
         if: "matrix.dependencies == 'lowest'"
         run: "composer update ${{ env.COMPOSER_FLAGS }} --prefer-lowest"

composer.json

@@ -24,7 +24,7 @@
     "require": {
         "php": "^5.3.2 || ^7.0",
         "composer/ca-bundle": "^1.0",
-        "composer/semver": "^2.0",
+        "composer/semver": "^2.0@dev",
         "composer/spdx-licenses": "^1.2",
         "composer/xdebug-handler": "^1.1",
         "justinrainbow/json-schema": "^3.0 || ^4.0 || ^5.0",

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "ded9d158cb184fe1c92fa05610786bb5",
+    "content-hash": "08293668540de913642a19e6af165dd0",
     "packages": [
         {
             "name": "composer/ca-bundle",
@@ -79,20 +79,20 @@
         },
         {
             "name": "composer/semver",
-            "version": "2.0.0",
+            "version": "dev-master",
             "source": {
                 "type": "git",
                 "url": "https://github.com/composer/semver.git",
-                "reference": "0ec124f57c7e23925c006cbad0de853e3aec3ba2"
+                "reference": "538b6696308ee4ebcdedbd41b1a68f4e67cc8191"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/composer/semver/zipball/0ec124f57c7e23925c006cbad0de853e3aec3ba2",
-                "reference": "0ec124f57c7e23925c006cbad0de853e3aec3ba2",
+                "url": "https://api.github.com/repos/composer/semver/zipball/538b6696308ee4ebcdedbd41b1a68f4e67cc8191",
+                "reference": "538b6696308ee4ebcdedbd41b1a68f4e67cc8191",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.3.2 || ^7.0"
+                "php": "^5.3.2 || ^7.0 || ^8.0"
             },
             "require-dev": {
                 "phpstan/phpstan": "^0.12.19",
@@ -140,7 +140,7 @@
             "support": {
                 "irc": "irc://irc.freenode.org/composer",
                 "issues": "https://github.com/composer/semver/issues",
-                "source": "https://github.com/composer/semver/tree/2.0.0"
+                "source": "https://github.com/composer/semver/tree/master"
             },
             "funding": [
                 {
@@ -152,7 +152,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2020-04-21T13:19:12+00:00"
+            "time": "2020-05-01T15:06:13+00:00"
         },
         {
             "name": "composer/spdx-licenses",
@@ -444,20 +444,20 @@
         },
         {
             "name": "seld/jsonlint",
-            "version": "1.7.2",
+            "version": "1.8.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/Seldaek/jsonlint.git",
-                "reference": "e2e5d290e4d2a4f0eb449f510071392e00e10d19"
+                "reference": "ff2aa5420bfbc296cf6a0bc785fa5b35736de7c1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Seldaek/jsonlint/zipball/e2e5d290e4d2a4f0eb449f510071392e00e10d19",
-                "reference": "e2e5d290e4d2a4f0eb449f510071392e00e10d19",
+                "url": "https://api.github.com/repos/Seldaek/jsonlint/zipball/ff2aa5420bfbc296cf6a0bc785fa5b35736de7c1",
+                "reference": "ff2aa5420bfbc296cf6a0bc785fa5b35736de7c1",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.3 || ^7.0"
+                "php": "^5.3 || ^7.0 || ^8.0"
             },
             "require-dev": {
                 "phpunit/phpunit": "^4.8.35 || ^5.7 || ^6.0"
@@ -491,9 +491,19 @@
             ],
             "support": {
                 "issues": "https://github.com/Seldaek/jsonlint/issues",
-                "source": "https://github.com/Seldaek/jsonlint/tree/1.7.2"
+                "source": "https://github.com/Seldaek/jsonlint/tree/master"
             },
-            "time": "2019-10-24T14:27:39+00:00"
+            "funding": [
+                {
+                    "url": "https://github.com/Seldaek",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/seld/jsonlint",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2020-04-30T19:05:18+00:00"
         },
         {
             "name": "seld/phar-utils",
@@ -1492,7 +1502,9 @@
     ],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": [],
+    "stability-flags": {
+        "composer/semver": 20
+    },
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {