For Travis CI - hack Travis to support multi-docs .travis.yml stream.

The CI mirror branches are now created and deleted on the fly. No more overhead to maintain them (i.e. resolving rebase conflict).
This is partial implementation of what has been requested in this feature request https://github.com/travis-ci/travis-ci/issues/3719.

.travis.yml

@@ -20,6 +20,8 @@
 # THE SOFTWARE.
 #
 
+---
+
 language: cpp
 cache: ccache
 sudo: false
@@ -115,7 +117,215 @@ before_script:
 script: rake ci
 before_cache: ccache -s
 after_success:
-  - if [ $SITE_UPDATE ]; then rake ci_site_update; fi && if [ ${TRAVIS_JOB_NUMBER##*.} == 1 ] && [ "$TRAVIS_PULL_REQUEST" == "false" ]; then rake ci_rebase; fi
+  - if [ $SITE_UPDATE ]; then rake ci_site_update; fi && if [ ${TRAVIS_JOB_NUMBER##*.} == 1 ] && [ "$TRAVIS_PULL_REQUEST" == "false" ]; then rake ci_create_mirrors; fi
   - if [ $PACKAGE_UPLOAD ]; then rake ci_package_upload; if [ $LINUX ] && [ ! "$URHO3D_64BIT" == "0" ]; then rake ci_package_upload URHO3D_USE_LIB64_RPM=1; fi; fi
 
+---
+
+branch: {name: Coverity-Scan, active: no, description: For Travis CI - switch CI build to enable Coverity Scan addon.}
+language: cpp
+compiler: gcc
+cache: ccache
+sudo: false
+addons:
+  apt:
+    packages: libasound2-dev
+  coverity_scan:
+    project:
+      name: urho3d/Urho3D
+      description: Urho3D is a free lightweight, cross-platform 2D and 3D game engine implemented in C++ and released under the MIT license. Greatly inspired by OGRE and Horde3D.
+    notification_email: [email protected]
+    build_command_prepend: rake cmake URHO3D_LUAJIT=1 URHO3D_LUAJIT_AMALG=1 URHO3D_SAMPLES=1 URHO3D_TOOLS=1 URHO3D_EXTRAS=1 URHO3D_LIB_TYPE=SHARED
+    build_command: rake make numjobs=4
+    branch_pattern: .*Coverity-Scan$
+env:
+  global:
+    - secure: DE9IUM+pIV757GU0ccfDJhA752442pKu3DyBthrzHW9+GbsqbfuJOx045CYNN5vOWutFPC0A51B9WxhLNpXXqD3mfU8MhP1gkF7SskrHvcAPrCyfdqZf1Q8XDP5phm2KbHhhwxQMYmmicd6yj8DPNy2wRoSgPSDp/ZUDk51XZDU=
+    - secure: itgWNvH4Zj0hQpkUctVxMwJwVX3hIluVuvUbzO2XG7dxQaMMfcLGwVKgq8X1HOf4dJCUv5WL0jcSMWXbdc8tvqQJwBb5R2Z2JJYpTTAgtmLy7TNn6zgetZtGrYEJuTlxSItbS/NF4iPDO25ih7j5Ma0ffXRpBnlURQaytfYfFaQ=
+    - LINUX=1
+    - USE_CCACHE=1
+    - CCACHE_SLOPPINESS=pch_defines,time_macros
+    - CCACHE_COMPRESS=1
+before_script:
+  - export TRAVIS_COMMIT=$TRAVIS_COMMIT~
+  - export COMMIT_MESSAGE=$(git log --format=%B -n 1 $TRAVIS_COMMIT)
+  - export PATH=$(whereis -b ccache |grep -o '\S*lib\S*'):$PATH
+  - ccache -z -M 100M
+script: true
+before_cache: ccache -s
+
+---
+
+branch: {name: Android-CI, active: yes, description: For Travis CI - switch CI build to use Android build environment.}
+language: android
+cache: { directories: $HOME/.ccache }
+sudo: false
+addons: {apt: {sources: &default_sources george-edison55-precise-backports, packages: &default_packages [doxygen, graphviz, libasound2-dev, g++-multilib]}}
+env:
+  global:
+    - secure: DE9IUM+pIV757GU0ccfDJhA752442pKu3DyBthrzHW9+GbsqbfuJOx045CYNN5vOWutFPC0A51B9WxhLNpXXqD3mfU8MhP1gkF7SskrHvcAPrCyfdqZf1Q8XDP5phm2KbHhhwxQMYmmicd6yj8DPNy2wRoSgPSDp/ZUDk51XZDU=
+    - secure: AfoHc5tpnYoI2TVGUeE9Xdru+15pd5N4YzO7EWvwmMnrHtNO3retrmKOGpnIyfbP2BeWRTW/z+BI4G0RrfvubjHu2us4wRh6Jq8+UZohBBkM+ldTnyqYHX97q+6ScWBWZGg7dpthd1x/7fmds8dSRzustHUhI7RzPbWEMQH1DGI=
+    - NUMJOBS=4
+    - ANDROID=1
+    - ANDROID_TMP=~/tmp
+    - PACKAGE_JOB_END=9
+    - CCACHE_SLOPPINESS=pch_defines,time_macros
+    - CCACHE_COMPRESS=1
+matrix:
+  fast_finish: true
+  include:
+    # x86 and x86_64 emulation currently requires hardware acceleration which Travis-CI cannot provide, so skip AVD for now
+    # env: API=21 ABI=x86_64      URHO3D_LIB_TYPE=SHARED INSTALL=sys-img-x86_64-android-21,tools AVD=test_21_x86_64
+    # env: API=21 ABI=x86         URHO3D_LIB_TYPE=SHARED INSTALL=sys-img-x86-android-21,tools AVD=test_21_x86
+
+    # Travis CI does not create one cache per job at the moment, so workaround it to have still high cache hit/miss ratio
+    # We use jdk key as the cache storage differentiator! Our library is compiled using NDK so it should not be affected by JDK version
+    # We can only cache 5 jobs due to limited supply of valid JDK versions, the rest use the Android compiler proper
+    # We have to ensure those jobs with AVD test are run using the correct JDK version, i.e. Oracle JDK 7 which is the default
+    - &cache1
+      jdk: oraclejdk8
+      env: API=21 ABI=x86_64      URHO3D_LIB_TYPE=STATIC INSTALL=sys-img-x86_64-android-21     USE_CCACHE=1
+    - &nocache
+      cache: false
+      env: API=21 ABI=x86_64      URHO3D_LIB_TYPE=SHARED INSTALL=sys-img-x86_64-android-21     USE_CCACHE=0
+    - &cache2
+      jdk: openjdk7
+      env: API=21 ABI=x86         URHO3D_LIB_TYPE=STATIC INSTALL=sys-img-x86-android-21        USE_CCACHE=1
+    - <<: *nocache
+      env: API=21 ABI=x86         URHO3D_LIB_TYPE=SHARED INSTALL=sys-img-x86-android-21        USE_CCACHE=0
+    - &cache3
+      jdk: openjdk6
+      env: API=21 ABI=arm64-v8a   URHO3D_LIB_TYPE=STATIC NO_SDK_SYSIMG=1                       USE_CCACHE=1
+    - <<: *nocache
+      env: API=21 ABI=arm64-v8a   URHO3D_LIB_TYPE=SHARED NO_SDK_SYSIMG=1                       USE_CCACHE=0
+    - <<: *nocache
+      env: API=21 ABI=armeabi-v7a URHO3D_LIB_TYPE=STATIC                                       USE_CCACHE=0
+    - &cache4
+      jdk: oraclejdk7
+      env: API=21 ABI=armeabi-v7a URHO3D_LIB_TYPE=SHARED INSTALL=tools AVD=test_21_armeabi-v7a USE_CCACHE=1
+    - <<: *nocache
+      env: API=19 ABI=armeabi-v7a URHO3D_LIB_TYPE=STATIC                                       USE_CCACHE=0
+    - &cache5
+      env: API=19 ABI=armeabi-v7a URHO3D_LIB_TYPE=SHARED AVD=test_19_armeabi-v7a               USE_CCACHE=1
+before_script:
+  - git clone --depth 1 --branch strip https://github.com/urho3d/android-ndk.git && export ANDROID_NDK=$(pwd)/android-ndk && if ([ $AVD ] || [ $PACKAGE_UPLOAD ]) && [ $INSTALL ]; then (while :; do echo 'y'; sleep 1; done) |android update sdk --no-ui --all --filter $INSTALL; fi
+  - export TRAVIS_COMMIT=$TRAVIS_COMMIT~
+  - export TAG=$(git describe --exact-match $TRAVIS_COMMIT 2>/dev/null); if [[ $TAG =~ [[:digit:]]+\.[[:digit:]]+ ]]; then export RELEASE_TAG=$TAG; fi
+  - export COMMIT_MESSAGE=$(git log --format=%B -n1 $TRAVIS_COMMIT)
+  - if [ ${TRAVIS_JOB_NUMBER##*.} -lt $PACKAGE_JOB_END ] && ([ $RELEASE_TAG ] || (! [[ $TRAVIS_BRANCH =~ [^-]+-[^-]+-CI ]] && echo $COMMIT_MESSAGE |grep -cq '\[ci package\]')); then export PACKAGE_UPLOAD=1; fi
+  - if [ "$ABI" == "x86_64" ]; then export C_PATH=$(pwd)/android-ndk/toolchains/x86_64-4.9/prebuilt/linux-x86_64/bin C_PREFIX=x86_64-linux-android; fi
+  - if [ "$ABI" == "x86" ]; then export C_PATH=$(pwd)/android-ndk/toolchains/x86-4.9/prebuilt/linux-x86_64/bin C_PREFIX=i686-linux-android; fi
+  - if [ "$ABI" == "arm64-v8a" ]; then export C_PATH=$(pwd)/android-ndk/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin C_PREFIX=aarch64-linux-android; fi
+  - if [ "$ABI" == "armeabi-v7a" ]; then export C_PATH=$(pwd)/android-ndk/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin C_PREFIX=arm-linux-androideabi; fi
+  - export PATH=$(whereis -b ccache |grep -o '\S*lib\S*'):$C_PATH:$PATH; for f in $C_PATH/$C_PREFIX-{gcc,g++}; do touch -d "2015-01-01 00:00:00 +0800" $f; done
+  - ccache -z -M 100M
+script: rake ci
+before_cache: ccache -s
+after_success: if [ $PACKAGE_UPLOAD ]; then rake ci_package_upload; fi
+
+---
+
+branch: {name: RPI-CI, active: yes, description: For Travis CI - switch CI build to use Raspberry-Pi build environment.}
+language: cpp
+cache: ccache
+sudo: false
+addons: {apt: {sources: &default_sources george-edison55-precise-backports, packages: &default_packages [doxygen, graphviz, libasound2-dev, g++-multilib, rpm]}}
+env:
+  global:
+    - secure: DE9IUM+pIV757GU0ccfDJhA752442pKu3DyBthrzHW9+GbsqbfuJOx045CYNN5vOWutFPC0A51B9WxhLNpXXqD3mfU8MhP1gkF7SskrHvcAPrCyfdqZf1Q8XDP5phm2KbHhhwxQMYmmicd6yj8DPNy2wRoSgPSDp/ZUDk51XZDU=
+    - secure: AfoHc5tpnYoI2TVGUeE9Xdru+15pd5N4YzO7EWvwmMnrHtNO3retrmKOGpnIyfbP2BeWRTW/z+BI4G0RrfvubjHu2us4wRh6Jq8+UZohBBkM+ldTnyqYHX97q+6ScWBWZGg7dpthd1x/7fmds8dSRzustHUhI7RzPbWEMQH1DGI=
+    - NUMJOBS=4
+    - RPI=1
+    - USE_CCACHE=1
+    - CCACHE_SLOPPINESS=pch_defines,time_macros
+    - CCACHE_COMPRESS=1
+matrix:
+  fast_finish: true
+  include:
+    - compiler: gcc-armeabi-v6-static
+      env: URHO3D_LIB_TYPE=STATIC
+    - compiler: gcc-armeabi-v6-shared
+      env: URHO3D_LIB_TYPE=SHARED
+    - compiler: gcc-armeabi-v7a-static
+      env: URHO3D_LIB_TYPE=STATIC RPI_ABI=armeabi-v7a
+    - compiler: gcc-armeabi-v7a-shared
+      env: URHO3D_LIB_TYPE=SHARED RPI_ABI=armeabi-v7a
+before_script:
+  - git clone --depth 1 https://github.com/raspberrypi/tools.git rpi-tools && export RPI_PREFIX=$(pwd)/rpi-tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf && git clone --depth 1 --branch strip https://github.com/urho3d/rpi-sysroot.git && export RPI_SYSROOT=$(pwd)/rpi-sysroot && for f in $RPI_PREFIX-{gcc,g++}; do touch -d "2015-01-01 00:00:00 +0800" $f; done
+  - export TRAVIS_COMMIT=$TRAVIS_COMMIT~
+  - export TAG=$(git describe --exact-match $TRAVIS_COMMIT 2>/dev/null); if [[ $TAG =~ [[:digit:]]+\.[[:digit:]]+ ]]; then export RELEASE_TAG=$TAG; fi
+  - export COMMIT_MESSAGE=$(git log --format=%B -n 1 $TRAVIS_COMMIT)
+  - if [ $RELEASE_TAG ] || (! [[ $TRAVIS_BRANCH =~ [^-]+-[^-]+-CI ]] && echo $COMMIT_MESSAGE |grep -cq '\[ci package\]'); then export PACKAGE_UPLOAD=1; fi
+  - export PATH=$(whereis -b ccache |grep -o '\S*lib\S*'):${RPI_PREFIX%/*}:$PATH
+  - ccache -z -M 100M
+script: rake ci
+before_cache: ccache -s
+after_success: if [ $PACKAGE_UPLOAD ]; then rake ci_package_upload; fi
+
+---
+
+branch: {name: OSX-CI, active: yes, description: For Travis CI - switch CI build to use OS X build environment.}
+language: objective-c
+env:
+  global:
+    - secure: DE9IUM+pIV757GU0ccfDJhA752442pKu3DyBthrzHW9+GbsqbfuJOx045CYNN5vOWutFPC0A51B9WxhLNpXXqD3mfU8MhP1gkF7SskrHvcAPrCyfdqZf1Q8XDP5phm2KbHhhwxQMYmmicd6yj8DPNy2wRoSgPSDp/ZUDk51XZDU=
+    - secure: AfoHc5tpnYoI2TVGUeE9Xdru+15pd5N4YzO7EWvwmMnrHtNO3retrmKOGpnIyfbP2BeWRTW/z+BI4G0RrfvubjHu2us4wRh6Jq8+UZohBBkM+ldTnyqYHX97q+6ScWBWZGg7dpthd1x/7fmds8dSRzustHUhI7RzPbWEMQH1DGI=
+    - NUMJOBS=3
+    - OSX=1
+  matrix:
+    - MAKEFILE=1    URHO3D_LIB_TYPE=STATIC
+    - MAKEFILE=1    URHO3D_LIB_TYPE=SHARED
+    - MAKEFILE=1    URHO3D_LIB_TYPE=STATIC URHO3D_64BIT=0
+    - MAKEFILE=1    URHO3D_LIB_TYPE=SHARED URHO3D_64BIT=0
+    - XCODE=1       URHO3D_LIB_TYPE=STATIC DEPLOYMENT_TARGET=10.8
+    - XCODE=1       URHO3D_LIB_TYPE=SHARED DEPLOYMENT_TARGET=10.8
+    - XCODE=1       URHO3D_LIB_TYPE=STATIC DEPLOYMENT_TARGET=10.8 URHO3D_64BIT=0
+    - XCODE=1       URHO3D_LIB_TYPE=SHARED DEPLOYMENT_TARGET=10.8 URHO3D_64BIT=0
+    - XCODE=1 IOS=1 URHO3D_LIB_TYPE=STATIC DEPLOYMENT_TARGET=7.0
+    - XCODE=1 IOS=1 URHO3D_LIB_TYPE=STATIC DEPLOYMENT_TARGET=7.0 URHO3D_64BIT=0
+matrix:
+  fast_finish: true
+before_install:
+  - export TRAVIS_COMMIT=$TRAVIS_COMMIT~
+  - export TAG=$(git describe --exact-match $TRAVIS_COMMIT 2>/dev/null); if [[ $TAG =~ [[:digit:]]+\.[[:digit:]]+ ]]; then export RELEASE_TAG=$TAG; fi
+  - export COMMIT_MESSAGE=$(git log --format=%B -n 1 $TRAVIS_COMMIT)
+  - if [ $XCODE ] && ([ $RELEASE_TAG ] || (! [[ $TRAVIS_BRANCH =~ [^-]+-[^-]+-CI ]] && echo $COMMIT_MESSAGE |grep -cq '\[ci package\]')); then export PACKAGE_UPLOAD=1; fi
+install:
+  - if [ $PACKAGE_UPLOAD ]; then travis_retry brew update >/dev/null && travis_retry brew install doxygen graphviz; fi
+  - if [ $XCODE ]; then rvm gemset use global && travis_retry gem install xcpretty; fi
+  - if [ $IOS ]; then export CI_START_TIME=$(date); fi
+script: rake ci
+after_success: if [ $PACKAGE_UPLOAD ]; then rake ci_package_upload; fi
+
+---
+
+branch: {name: Emscripten-CI, active: yes, description: For Travis CI - switch CI build to use Emscripten build environment.}
+language: objective-c
+env:
+  global:
+    - secure: DE9IUM+pIV757GU0ccfDJhA752442pKu3DyBthrzHW9+GbsqbfuJOx045CYNN5vOWutFPC0A51B9WxhLNpXXqD3mfU8MhP1gkF7SskrHvcAPrCyfdqZf1Q8XDP5phm2KbHhhwxQMYmmicd6yj8DPNy2wRoSgPSDp/ZUDk51XZDU=
+    - secure: AfoHc5tpnYoI2TVGUeE9Xdru+15pd5N4YzO7EWvwmMnrHtNO3retrmKOGpnIyfbP2BeWRTW/z+BI4G0RrfvubjHu2us4wRh6Jq8+UZohBBkM+ldTnyqYHX97q+6ScWBWZGg7dpthd1x/7fmds8dSRzustHUhI7RzPbWEMQH1DGI=
+    - NUMJOBS=3
+    - EMSCRIPTEN=1
+    - EMSCRIPTEN_SHARE_DATA=1
+    - EMSCRIPTEN_EMRUN_BROWSER=chrome
+  matrix:
+    - URHO3D_LIB_TYPE=STATIC
+matrix:
+  fast_finish: true
+before_install:
+  - export TRAVIS_COMMIT=$TRAVIS_COMMIT~
+  - export TAG=$(git describe --exact-match $TRAVIS_COMMIT 2>/dev/null); if [[ $TAG =~ [[:digit:]]+\.[[:digit:]]+ ]]; then export RELEASE_TAG=$TAG; fi
+  - export COMMIT_MESSAGE=$(git log --format=%B -n 1 $TRAVIS_COMMIT)
+  - if [ $RELEASE_TAG ] || (! [[ $TRAVIS_BRANCH =~ [^-]+-[^-]+-CI ]] && echo $COMMIT_MESSAGE |grep -cq '\[ci package\]'); then export PACKAGE_UPLOAD=1; fi
+  - pushd /usr/bin && sudo ln -sf python python2 && popd
+  - ulimit -Sn 512
+install:
+  - if [ $PACKAGE_UPLOAD ]; then travis_retry brew update >/dev/null && travis_retry brew install doxygen graphviz; fi
+  - wget https://s3.amazonaws.com/mozilla-games/emscripten/releases/emsdk-portable.tar.gz && tar xfz emsdk-portable.tar.gz && rm emsdk-portable.tar.gz && cd emsdk_portable && ./emsdk update >/dev/null && sed -i.bak 's/-xvf/-xf/g' emsdk && ./emsdk install latest >/dev/null && ./emsdk activate latest >/dev/null && source ./emsdk_env.sh && export EMSCRIPTEN_ROOT_PATH=$EMSCRIPTEN && export EMSCRIPTEN=1
+script: rake ci
+after_success: if [ $PACKAGE_UPLOAD ]; then rake ci_package_upload && rake ci_emscripten_samples_update; fi
+
+...
+
 # vi: set ts=2 sw=2 expandtab:

Rakefile

@@ -216,7 +216,7 @@ task :ci do
   end
 end
 
-# Usage: NOT intended to be used manually (if you insist then try: GIT_NAME=... GIT_EMAIL=... GH_TOKEN=... rake ci_site_update)
+# Usage: NOT intended to be used manually
 desc 'Update site documentation to GitHub Pages'
 task :ci_site_update do
   # Pull or clone
@@ -253,7 +253,7 @@ task :ci_site_update do
   end
 end
 
-# Usage: NOT intended to be used manually (if you insist then try: GIT_NAME=... GIT_EMAIL=... GH_TOKEN=... rake ci_emscripten_samples_update)
+# Usage: NOT intended to be used manually
 desc 'Update Emscripten HTML5 samples to GitHub Pages'
 task :ci_emscripten_samples_update do
   # Pull or clone
@@ -266,17 +266,25 @@ task :ci_emscripten_samples_update do
   system "cd ../doc-Build && git config user.name $GIT_NAME && git config user.email $GIT_EMAIL && git remote set-url --push origin https://[email protected]/urho3d/urho3d.github.io.git && git add -A . && ( git commit -q -m \"Travis CI: Emscripten samples update at #{Time.now.utc}.\n\nCommit: https://github.com/$TRAVIS_REPO_SLUG/commit/$TRAVIS_COMMIT\n\nMessage: $COMMIT_MESSAGE\" || true) && git push -q >/dev/null 2>&1" or abort 'Failed to update Emscripten samples'
 end
 
-# Usage: NOT intended to be used manually (if you insist then try: GIT_NAME=... GIT_EMAIL=... GH_TOKEN=... TRAVIS_BRANCH=... rake ci_rebase)
-desc 'Rebase all CI mirror branches'
-task :ci_rebase do
+# Usage: NOT intended to be used manually
+desc 'Create all CI mirror branches'
+task :ci_create_mirrors do
   system 'git config user.name $GIT_NAME && git config user.email $GIT_EMAIL && git remote set-url --push origin https://[email protected]/$TRAVIS_REPO_SLUG.git'
   baseline = ENV['RELEASE_TAG'] || "origin/#{ENV['TRAVIS_BRANCH']}"
-  rebase = /\[ci rebase\]/ =~ ENV['COMMIT_MESSAGE']
   scan = ENV['PACKAGE_UPLOAD'] || /\[ci scan\]/ =~ ENV['COMMIT_MESSAGE']  # Limit the frequency of scanning
-  ['Coverity-Scan', 'Android-CI', 'RPI-CI', 'OSX-CI', 'Emscripten-CI'].each { |ci| ci_branch = ENV['RELEASE_TAG'] || ENV['TRAVIS_BRANCH'] == 'master' ? ci : "#{ENV['TRAVIS_BRANCH']}-#{ci}"; system "if git fetch origin #{ci_branch}:#{ci_branch} 2>/dev/null; then if [ #{scan} ] || [ #{/Scan/ !~ ci} ]; then git rebase #{baseline} #{ci_branch} && git push -qf -u origin #{ci_branch} >/dev/null 2>&1; fi; elif [ #{rebase} ] && ([ #{scan} ] || [ #{/Scan/ !~ ci} ]); then git checkout -b #{ci_branch} #{ENV['TRAVIS_BRANCH']} && rm .travis.yml && wget -q https://raw.githubusercontent.com/#{ENV['TRAVIS_REPO_SLUG']}/#{ci}/.travis.yml && git add -A . && git commit -m 'For Travis CI - switch CI build to use #{ci.split('-').first} build environment.' && git push -qf -u origin #{ci_branch} >/dev/null 2>&1; fi" or abort "Failed to rebase #{ci_branch} mirror branch" }
+  require 'yaml'
+  stream = YAML::load_stream(File.open('.travis.yml')).drop(1)
+  stream.each { |doc| branch = doc.delete('branch'); ci = branch['name']; next unless branch['active'] || (scan && /Scan/ =~ ci); lastjob = doc['matrix'] && doc['matrix']['include'] ? doc['matrix']['include'].length : (doc['env']['matrix'] ? doc['env']['matrix'].length : 1); doc['after_script'] = "if [ ${TRAVIS_JOB_NUMBER##*.} == #{lastjob} ]; then rake ci_delete_mirror; fi"; File.open('.travis.yml.doc', 'w') { |file| file.write doc.to_yaml }; ci_branch = ENV['RELEASE_TAG'] || ENV['TRAVIS_BRANCH'] == 'master' ? ci : "#{ENV['TRAVIS_BRANCH']}-#{ci}"; system "if git fetch origin #{ci_branch}:#{ci_branch} 2>/dev/null; then git push -qf origin --delete #{ci_branch} && git branch -D #{ci_branch}; fi && git checkout -b #{ci_branch} #{ENV['TRAVIS_BRANCH']} && rm .travis.yml && mv .travis.yml.doc .travis.yml && git add -A . && git commit -m '#{branch['description']}' && git push -qf -u origin #{ci_branch} >/dev/null 2>&1" or abort "Failed to create #{ci_branch} mirror branch" }
 end
 
-# Usage: NOT intended to be used manually (if you insist then try: rake ci_package_upload)
+# Usage: NOT intended to be used manually
+desc 'Delete CI mirror branch'
+task :ci_delete_mirror do
+  system 'git config user.name $GIT_NAME && git config user.email $GIT_EMAIL && git remote set-url --push origin https://[email protected]/$TRAVIS_REPO_SLUG.git'
+  system "git push -qf origin --delete #{ENV['TRAVIS_BRANCH']}" or abort "Failed to clean #{ENV['TRAVIS_BRANCH']} mirror branch"
+end
+
+# Usage: NOT intended to be used manually
 desc 'Make binary package and upload it to a designated central hosting server'
 task :ci_package_upload do
   if ENV['XCODE']