Give up. Restore original script and comment off/exclude 18.04

.travis.yml

@@ -26,21 +26,21 @@ matrix:
       env:
         - BUILD_TYPE="Debug"
 
-    - name: "Ubuntu 18.04 - gcc (Release)"
+#      - name: "Ubuntu 18.04 - gcc (Release)"
-      os: linux
+#        os: linux
-      dist: bionic
+#        dist: bionic
-      sudo: required
+#        sudo: required
-      compiler: gcc
+#        compiler: gcc
-      env:
+#        env:
-        - BUILD_TYPE="Release"
+#          - BUILD_TYPE="Release"
-
+#  
-    - name: "Ubuntu 18.04 - gcc (Debug)"
+#      - name: "Ubuntu 18.04 - gcc (Debug)"
-      os: linux
+#        os: linux
-      dist: bionic
+#        dist: bionic
-      sudo: required
+#        sudo: required
-      compiler: gcc
+#        compiler: gcc
-      env:
+#        env:
-        - BUILD_TYPE="Debug"
+#          - BUILD_TYPE="Debug"
 
     - name: "Ubuntu 20.04 - gcc (Release)"
       os: linux

ci/install.sh

@@ -4,29 +4,38 @@ set -x # Prints every command
 
 # This file is only used from Travis CI, where the only Linux distro used is Ubuntu
 
-pip=pip3
+python --version
+python3 --version
+
 if [[ "$(uname -s)" == 'Linux' ]]; then
-    sudo apt  update     --yes
+    sudo apt-get update
-    sudo apt  install    --yes cmake
+
-    sudo apt  install    --yes zlib1g-dev libssh-dev python3-pip libxml2-utils
+    sudo apt-get install cmake
-    if [ -n "$WITH_VALGRIND" ]; then
+    if [[ "$(lsb_release -cs)" == 'focal' ]]; then
-        sudo apt install --yes valgrind
+        # In Ubuntu 20.04 python-pip does not exist. Furthermore we need to have the alias python for python3
+        sudo apt-get install zlib1g-dev libssh-dev python3-pip python-is-python3 libxml2-utils
+    else
+        sudo apt-get install zlib1g-dev libssh-dev python-pip libxml2-utils
     fi
-    sudo apt  autoremove --yes
+
     if [ -n "$WITH_VALGRIND" ]; then
         sudo apt-get install valgrind
     fi
-    pip=pip
+    sudo pip install virtualenv
-fi
+    virtualenv conan
-
+    source conan/bin/activate
-sudo $pip install virtualenv
+    pip install conan==1.30.2
+    pip install codecov
+    pip install lxml
+else
+    sudo pip3 install virtualenv
     virtualenv conan
     source conan/bin/activate
-$pip3 install conan==1.30.2
+    pip3 install conan==1.30.2
-$pip3 install codecov
+    pip3 install codecov
-$pip3 install lxml
+    pip3 install lxml
+fi
 
-python3 --version
 conan --version
 conan config set storage.path=~/conanData
 conan profile new default --detect
@@ -34,3 +43,4 @@ conan profile new default --detect
 if [[ "$(uname -s)" == 'Linux' ]]; then
     conan profile update settings.compiler.libcxx=libstdc++11 default
 fi
+