Modernize CI configuration

- Remove mentions of Travis CI;
- Upgrade all actions to their latest release (and location);
- Upgrade host OS to use latest tag;
- Only test the latest (and master) dmd and ldc;

Author: Geod24

.github/workflows/main.yml

@@ -9,47 +9,42 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ ubuntu-18.04, macOS-10.15, windows-2019 ]
-        # DMD < 2.087.1 does not work on Mac OSX Catalina (10.15) because druntime used
-        # a private symbol, hence this is the minimum required version
-        # However, while compiling with DMD 2.087.1 works on Catalina,
-        # the distributed binary was not built with it until 2.090.0
-        dc: [ dmd-master, ldc-master, dmd-latest, ldc-latest, dmd-2.090.0, ldc-1.17.0 ]
+        os: [ ubuntu-latest, macOS-latest, windows-latest ]
+        dc: [ dmd-master, ldc-master, dmd-latest, ldc-latest ]
         exclude:
           # https://github.com/dlang/dub/issues/1914
           # https://github.com/dlang/dub/issues/1915
-          - { os: windows-2019, dc: dmd-master }
-          - { os: windows-2019, dc: dmd-latest }
-          - { os: windows-2019, dc: dmd-2.090.0 }
+          - { os: windows-latest, dc: dmd-master }
+          - { os: windows-latest, dc: dmd-latest }
+          - { os: macOS-latest,   dc: dmd-master }
+          - { os: macOS-latest,   dc: dmd-latest }
 
     runs-on: ${{ matrix.os }}
     timeout-minutes: 30
     steps:
 
     # Checkout this repository
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     # Install the D compiler
     - name: Prepare compiler
-      uses: mihails-strasuns/setup-dlang@v1
+      uses: dlang-community/setup-dlang@v1
       with:
           compiler: ${{ matrix.dc }}
 
-    # Install os-specific packages
-    - name: '[Posix] Install dependencies'
-      if: runner.os == 'macOS' || runner.os == 'Linux'
+    # Install os-specific packages.
+    # We only need pkg-config and libsodium, which *might* already be installed.
+    # See https://github.com/actions/runner-images for included software / libraries
+    - name: '[Linux] Install dependencies'
+      if: runner.os == 'Linux'
       run: |
-        if [ '${{ runner.os }}' == 'macOS' ]; then
-          brew install pkg-config libsodium
-        elif [ '${{ runner.os }}' == 'Linux' ]; then
-          sudo add-apt-repository ppa:ubuntu-toolchain-r/test
-          sudo apt-get update
-          sudo apt-get install libsodium-dev
-        fi
+        sudo add-apt-repository ppa:ubuntu-toolchain-r/test
+        sudo apt-get update
+        sudo apt-get install libsodium-dev
 
     - name: '[Windows] Load libsodium from cache'
       id: cache-libsodium
       if: runner.os == 'Windows'
-      uses: actions/cache@v1
+      uses: actions/cache@v4
       with:
         path: ${{ github.workspace }}\lib\libsodium\x64\Release\v142\static\
         key: libsodium-1.0.18
@@ -87,6 +82,6 @@ jobs:
         if %errorlevel% neq 0 exit /b %errorlevel%
 
     - name: 'Upload code coverage'
-      uses: codecov/codecov-action@v1
+      uses: codecov/codecov-action@v4
       with:
         flags: unittests

.travis.yml

@@ -1,6 +1,5 @@
 ## Libsodiumd: D bindings for libsodium
 
-[![Build Status](https://travis-ci.com/geod24/libsodiumd.svg?branch=upstream-1.0.17)](https://travis-ci.com/geod24/libsodiumd)
 [![DUB Package](https://img.shields.io/dub/v/libsodiumd.svg)](https://code.dlang.org/packages/libsodiumd)
 
 Currently supported version: v1.0.18 (released 2019-05-31)