# Required extension not being installed in tests

**URL:** <https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444>\
**Category:** Support\
**Tags:** extensions-manager\
**Created:** [December 9, 2019, 11:10am UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444 "2019-12-09T11:10:46Z")\
**Posts on this page:** 20\
**Page:** 1

<div class="post-metadata">

**Author:** ![Alex\_Vergara](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/alex_vergara/32/15205_2.png) [@Alex\_Vergara](https://discourse.slicer.org/u/Alex_Vergara)\
**Post date:** [December 9, 2019, 11:10am UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/1 "2019-12-09T11:10:46Z")

</div>

While building my extension I have set up a required extension (SlicerElastix) which runs fine, but when I want to test it in Docker it fails with this message:

```auto
144 CMake Warning at /usr/src/Slicer/Extensions/CMake/SlicerBlockAdditionalLauncherSettings.cmake:48 (message):
145 Dependent extension SlicerElastix cannot be found by CMake find_package(),
146 therefore paths variables cannot be imported from this extension. The
147 problem can be resolved by generating SlicerElastixConfig.cmake by adding
148 include(${Slicer_EXTENSION_GENERATE_CONFIG}) to the top-level
149 CMakeLists.txt of the dependent extension.

```

I have a look at [the offending file](https://github.com/lassoan/SlicerElastix/blob/master/CMakeLists.txt) and indeed, it contains [that line](https://github.com/lassoan/SlicerElastix/blob/master/CMakeLists.txt#L50). So, I don’t know what it is happening here.

---

<div class="post-metadata">

**Author:** ![jamesobutler](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jamesobutler/32/7511_2.png) [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)\
**Post date:** [December 9, 2019, 3:40pm UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/2 "2019-12-09T15:40:32Z")

</div>

It appears that another extension, SequenceRegistration, is also having the same issue. That extension depends on Sequences and SlicerElastix. Here’s the nightly Windows build for SequenceRegistration that has the same CMake warning: [http://slicer.cdash.org/viewConfigure.php?buildid=1770198](http://slicer.cdash.org/viewConfigure.php?buildid=1770198).

A previous SlicerElastix error due to being a dependency was brought up in [Failing Tests - ImportError: No module named Elastix](https://discourse.slicer.org/t/failing-tests-importerror-no-module-named-elastix/7202), but that solution by @jcfr is evidently not working anymore.

---

<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [December 9, 2019, 5:57pm UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/3 "2019-12-09T17:57:02Z")

</div>

> [@Alex\_Vergara](#):
>
> Dependent extension SlicerElastix cannot be found by CMake find\_package(), 146 therefore paths variables cannot be imported from this extension.

When you build an extension, you need to pass location of all other extensions that it depends on, as CMake variables. For example, if you want to build Sequence Registration, then you need to set SlicerElastix\_DIR=…

For 1-2 extensions with simple dependencies you may do this manually, but it may be simpler (especially when you build several extensions) to use Slicer’s extensions index build script: copy s4ext files that you want to build into a folder and specify that as Slicer\_EXTENSION\_DESCRIPTION\_DIR. See the complete command-line [here](https://www.slicer.org/wiki/Documentation/Nightly/Developers/Build_ExtensionsIndex#Build_slicer_extensions_associated_with_Slicer_trunk). This script determines dependencies between extensions, builds them in the correct order and passes all required paths to dependent extensions.

---

<div class="post-metadata">

**Author:** ![jamesobutler](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jamesobutler/32/7511_2.png) [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)\
**Post date:** [December 10, 2019, 1:53am UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/4 "2019-12-10T01:53:21Z")

</div>

@lassoan Do you have insight on how to fix the factory build of SequenceRegistration extension which specifies SlicerElastix as a dependent extension. Looking to solve this [failing test](http://slicer.cdash.org/testDetails.php?test=9803789&build=1770127) specifically.

---

<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [December 10, 2019, 6:44am UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/5 "2019-12-10T06:44:53Z")

</div>

Maybe we just need to add the missing `["Sequences", "Elastix"]` dependency declaration here:

> <https://github.com/moselhy/SlicerSequenceRegistration/blob/master/SequenceRegistration/SequenceRegistration.py#L20>

---

<div class="post-metadata">

**Author:** ![Alex\_Vergara](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/alex_vergara/32/15205_2.png) [@Alex\_Vergara](https://discourse.slicer.org/u/Alex_Vergara)\
**Post date:** [December 11, 2019, 2:07pm UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/6 "2019-12-11T14:07:32Z")

</div>

Adding Elastix in parent dependencies is the detonant for the error

```auto
CMake Warning at /usr/src/Slicer/Extensions/CMake/SlicerBlockAdditionalLauncherSettings.cmake:48 (message):
  Dependent extension SlicerElastix cannot be found by CMake find_package(),
  therefore paths variables cannot be imported from this extension. The
  problem can be resolved by generating SlicerElastixConfig.cmake by adding
  include(${Slicer_EXTENSION_GENERATE_CONFIG}) to the top-level
  CMakeLists.txt of the dependent extension.
Call Stack (most recent call first):
  /usr/src/Slicer-build/Slicer-build/UseSlicer.cmake:279 (include)
  CMakeLists.txt:18 (include)

-- Setting EXTENSION_SOURCE_DIR ................: /builds/project-0
-- Setting EXTENSION_SUPERBUILD_BINARY_DIR .....: /builds/dosimetry4d-build
-- Setting EXTENSION_BUILD_SUBDIRECTORY ........: .
-- Setting MIDAS_PACKAGE_URL ...................: http://slicer.kitware.com/midas3
-- Setting MIDAS_PACKAGE_EMAIL .................: OBFUSCATED
-- Setting MIDAS_PACKAGE_API_KEY ...............: OBFUSCATED
-- Setting EXTENSION_SVNUSERNAME ...............: NOT DEFINED
-- Setting EXTENSION_SVNPASSWORD ...............: NOT DEFINED
-- Setting EXTENSION_DEPENDS ...................: SlicerElastix
-- Setting EXTENSION_BUILD_SUBDIRECTORY ........: .
-- Setting EXTENSION_HOMEPAGE ..................: http://gitlab.com/opendose/opendose4d
-- Setting EXTENSION_CONTRIBUTORS ..............: Alex Vergara Gil (INSERM) and Janick Rueegger (KSA)
-- Setting EXTENSION_CATEGORY ..................: Dosimetry
-- Setting EXTENSION_ICONURL ...................: https://opendose.org/themes/default/images/opendose_favicon.png
-- Setting EXTENSION_DESCRIPTION ...............: This extension contains the entire dosimetry workflow for a multipoint st [...]
-- Setting EXTENSION_SCREENSHOTURLS ............: http://www.example.com/Slicer/Extensions/Dosimetry/Screenshots/1.png
-- Setting EXTENSION_ENABLED ...................: 1
-- Setting EXTENSION_STATUS ....................: NOT DEFINED
-- Setting default for EXTENSION_STATUS ........: 
-- Found Git: /usr/local/bin/git  
-- Found Subversion: /usr/bin/svn (found version "1.7.14") 
-- Configuring Scripted module: Dosimetry4D
CMake Error at /usr/src/Slicer/CMake/SlicerMacroBuildScriptedModule.cmake:78 (message):
  slicerMacroBuildScriptedModule(RESOURCES) given nonexistent file or
  directory 'Resources/JSON/DVK-F-18.json'
Call Stack (most recent call first):
  Dosimetry4D/CMakeLists.txt:53 (slicerMacroBuildScriptedModule)

-- Configuring incomplete, errors occurred!
See also "/builds/dosimetry4d-build/CMakeFiles/CMakeOutput.log".
See also "/builds/dosimetry4d-build/CMakeFiles/CMakeError.log".
e[0KAuthenticating with credentials from /Users/alexvergaragil/.docker/config.json
e[0;me[31;1mERROR: Job failed: exit code 1
e[0;m

```

---

<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [December 11, 2019, 2:10pm UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/7 "2019-12-11T14:10:03Z")

</div>

Make sure to add SlicerElastix\_DIR when configuring you project in CMake (or put all s4ext files in a folder and let Slicer extension build script to figure out dependencies, build order, and set all necessary CMake variables).

---

<div class="post-metadata">

**Author:** ![Alex\_Vergara](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/alex_vergara/32/15205_2.png) [@Alex\_Vergara](https://discourse.slicer.org/u/Alex_Vergara)\
**Post date:** [December 11, 2019, 2:12pm UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/8 "2019-12-11T14:12:51Z")

</div>

This is my CI file

```auto
image: unnmdnwb3/slicer3d-nightly:0.4.0

build-and-test:
  variables:
    DISPLAY: ":99.0"
  script:
    - mkdir $CI_BUILDS_DIR/dosimetry4d-build && cd $CI_BUILDS_DIR/dosimetry4d-build 
    - mkdir /usr/src/SlicerDICOMDatabase
    - sed '/\[General\]/a DatabaseDirectory=/usr/src/SlicerDICOMDatabase' /usr/src/Slicer-build/Slicer-build/SlicerLauncherSettings.ini
    - git clone git://github.com/Slicer/ExtensionsIndex.git $CI_BUILDS_DIR/SlicerExtensionsIndex-master
    - cmake -DSlicer_DIR:PATH=/usr/src/Slicer-build/Slicer-build -DBUILDNAME:STRING=dosimetry4d $CI_PROJECT_DIR -DSlicer_EXTENSION_DESCRIPTION_DIR:PATH=$CI_BUILDS_DIR/SlicerExtensionsIndex-master -DCMAKE_BUILD_TYPE:STRING=Testing -DENABLE_TESTS:BOOL=ON
    - make
    - /usr/src/Slicer-build/python-install/bin/PythonSlicer -m pip install --upgrade pip
    - /usr/src/Slicer-build/python-install/bin/PythonSlicer -m pip install 2to3 lmfit
    - 2to3 -w /usr/src/Slicer-build/python-install/lib/python3.6/site-packages/uncertainties
    - Xvfb :99 -screen 0 1024x768x24 &> xvfb.log &
    - cd $CI_BUILDS_DIR/dosimetry4d-build
    - ctest -V

```

Do you mean adding `SlicerElastix_DIR` even when it is not there in the first place?  
How to copy the `s4ext` file, shall I copy from web or do I need to create a local copy? There is [already a folder](https://github.com/Slicer/Slicer/tree/master/Extensions) of `s4ext` inside Slicer

---

<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [December 11, 2019, 4:21pm UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/9 "2019-12-11T16:21:28Z")

</div>

Do you want to build extensions manually or make Slicer’s script build a list of extensions?

---

<div class="post-metadata">

**Author:** ![Alex\_Vergara](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/alex_vergara/32/15205_2.png) [@Alex\_Vergara](https://discourse.slicer.org/u/Alex_Vergara)\
**Post date:** [December 12, 2019, 3:59am UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/10 "2019-12-12T03:59:12Z")

</div>

Neither, I want Slicer to install required extensions automatically.

---

<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [December 12, 2019, 5:40am UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/11 "2019-12-12T05:40:21Z")

</div>

Do you mean you bundle extensions with a custom Slicer build?

---

<div class="post-metadata">

**Author:** ![Alex\_Vergara](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/alex_vergara/32/15205_2.png) [@Alex\_Vergara](https://discourse.slicer.org/u/Alex_Vergara)\
**Post date:** [December 12, 2019, 5:42am UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/12 "2019-12-12T05:42:50Z")

</div>

I have made an extension that depends on another (Elastix) and I want that Slicer installs the required extension automatically. My extension shall be able to install in vanilla slicer-nightly.

---

<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [December 12, 2019, 5:55am UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/13 "2019-12-12T05:55:46Z")

</div>

You need to specify the list of extensions yours depend on in the top-level CMakeLists.txt file (EXTENSION\_DEPENDS variable). After this, you also need to regenerate the s4ext file and update it in ExtensionsIndex repository.

---

<div class="post-metadata">

**Author:** ![Alex\_Vergara](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/alex_vergara/32/15205_2.png) [@Alex\_Vergara](https://discourse.slicer.org/u/Alex_Vergara)\
**Post date:** [December 13, 2019, 11:14am UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/14 "2019-12-13T11:14:33Z")

</div>

I currently have (EXTENSION\_DEPENDS variable)

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/e/c/ecbe7d9f4d8129cdd32e5e7ba9412642f9e5f1e9.png)

May you please have a look to [my extension](https://gitlab.com/opendose/opendose4d) and tell me what I am missing?

I am still having [these errors](https://gitlab.com/opendose/opendose4d/-/jobs/373395246)

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/5/2/52ed23baafc9413a02008bb6129becb0406a0a40.png)

---

<div class="post-metadata">

**Author:** ![Alex\_Vergara](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/alex_vergara/32/15205_2.png) [@Alex\_Vergara](https://discourse.slicer.org/u/Alex_Vergara)\
**Post date:** [December 19, 2019, 2:27pm UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/15 "2019-12-19T14:27:53Z")

</div>

I still not able to force my extension to launch Elastix installation in tests

---

<div class="post-metadata">

**Author:** ![Alex\_Vergara](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/alex_vergara/32/15205_2.png) [@Alex\_Vergara](https://discourse.slicer.org/u/Alex_Vergara)\
**Post date:** [March 2, 2020, 2:38pm UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/16 "2020-03-02T14:38:42Z")

</div>

I have found a way to force install SlicerElastix from within python, however this requires Slicer Restart, this is not optimal, I wanted to do it from within the gitlab-ci itself but I get several errors:

```auto
Traceback (most recent call last):
  File "installElastix.py", line 2, in <module>
    emm = slicer.app.extensionsManagerModel()
AttributeError: module 'slicer' has no attribute 'app'
vtkDebugLeaks has found no leaks.

```

My `installElastix.py` script contains

```python
import slicer
emm = slicer.app.extensionsManagerModel()
md = emm.retrieveExtensionMetadataByName('SlicerElastix')
emm.downloadAndInstallExtension(md['extension_id'])

```

In the environment there are

```auto
[Application]
path=<APPLAUNCHER_DIR>/bin/./SlicerApp-real
arguments=
name=Slicer
revision=e68a1a2
organizationDomain=www.na-mic.org
organizationName=NA-MIC

[ExtraApplicationToLaunch]

designer/shortArgument=
designer/help=Start Qt designer using Slicer plugins
designer/path=/opt/qt/5.11.2/gcc_64/bin/designer
designer/arguments=

[Environment]
additionalPathVariables=QT_PLUGIN_PATH,PYTHONPATH

[LibraryPaths]
1\path=<APPLAUNCHER_SETTINGS_DIR>/bin/.
2\path=../lib/Slicer-4.11/qt-loadable-modules
3\path=<APPLAUNCHER_SETTINGS_DIR>/lib/Slicer-4.11/cli-modules/.
4\path=<APPLAUNCHER_SETTINGS_DIR>/lib/Slicer-4.11/qt-loadable-modules/.
5\path=/usr/src/Slicer-build/OpenSSL
6\path=/usr/src/Slicer-build/python-install/lib
7\path=/usr/src/Slicer-build/VTK-build/lib/.
8\path=/usr/src/Slicer-build/teem-build/bin/.
9\path=/usr/src/Slicer-build/DCMTK-build/lib/.
10\path=/usr/src/Slicer-build/ITK-build/lib/.
11\path=/usr/src/Slicer-build/CTK-build/CTK-build/bin/.
12\path=/usr/src/Slicer-build/CTK-build/PythonQt-build/.
13\path=/usr/src/Slicer-build/LibArchive-install/lib
14\path=/usr/src/Slicer-build/JsonCpp-build/src/lib_json/.
15\path=/usr/src/Slicer-build/ParameterSerializer-build/lib/.
16\path=/usr/src/Slicer-build/SlicerExecutionModel-build/ModuleDescriptionParser/bin/.
17\path=/usr/src/Slicer-build/python-install/lib/python3.6/site-packages/numpy/core
18\path=/usr/src/Slicer-build/python-install/lib/python3.6/site-packages/numpy/lib
size=18

[Paths]
1\path=<APPLAUNCHER_SETTINGS_DIR>/bin/.
2\path=/opt/qt/5.11.2/gcc_64/bin
3\path=<APPLAUNCHER_SETTINGS_DIR>/lib/Slicer-4.11/cli-modules/.
4\path=/usr/src/Slicer-build/python-install/bin
5\path=/usr/src/Slicer-build/teem-build/bin/.
size=5

[EnvironmentVariables]
SLICER_HOME=/usr/src/Slicer-build/Slicer-build
ITK_AUTOLOAD_PATH=<APPLAUNCHER_SETTINGS_DIR>/lib/Slicer-4.11/ITKFactories/.
PIP_REQUIRE_VIRTUALENV=0
SSL_CERT_FILE=<APPLAUNCHER_SETTINGS_DIR>/share/Slicer-4.11/Slicer.crt
PYTHONHOME=/usr/src/Slicer-build/python-install
PYTHONNOUSERSITE=1

[QT_PLUGIN_PATH]
1\path=<APPLAUNCHER_SETTINGS_DIR>/bin
2\path=/usr/src/Slicer-build/CTK-build/CTK-build/bin
3\path=/opt/qt/5.11.2/gcc_64/plugins
size=3

[PYTHONPATH]
1\path=<APPLAUNCHER_SETTINGS_DIR>/bin/.
2\path=<APPLAUNCHER_SETTINGS_DIR>/bin/Python
3\path=<APPLAUNCHER_SETTINGS_DIR>/lib/Slicer-4.11/qt-loadable-modules/.
4\path=<APPLAUNCHER_SETTINGS_DIR>/lib/Slicer-4.11/qt-loadable-modules/Python
5\path=<APPLAUNCHER_SETTINGS_DIR>/lib/Slicer-4.11/qt-scripted-modules
6\path=/usr/src/Slicer-build/python-install/lib/python3.6
7\path=/usr/src/Slicer-build/python-install/lib/python3.6/lib-dynload
8\path=/usr/src/Slicer-build/python-install/lib/python3.6/site-packages
9\path=/usr/src/Slicer-build/VTK-build/lib/python3.6/site-packages
10\path=/usr/src/Slicer-build/CTK-build/CTK-build/bin/Python
11\path=/usr/src/Slicer-build/CTK-build/CTK-build/bin/.
size=11

```

---

<div class="post-metadata">

**Author:** ![Alex\_Vergara](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/alex_vergara/32/15205_2.png) [@Alex\_Vergara](https://discourse.slicer.org/u/Alex_Vergara)\
**Post date:** [March 2, 2020, 4:15pm UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/17 "2020-03-02T16:15:41Z")

</div>

I have tried to follow this [circleci.yml](https://github.com/Slicer/Slicer/blob/master/.circleci/config.yml) in the slicer repository using the `slicer-base` docker image and it fails with

```auto
$ ../Slicer-build/BuildSlicer.sh
+ set -o pipefail
+ set -o
allexport off
braceexpand on
emacs off
errexit on
errtrace off
functrace off
hashall on
histexpand off
history off
ignoreeof off
interactive-comments on
keyword off
monitor off
noclobber off
noexec off
noglob off
nolog off
notify off
nounset off
onecmd off
physical off
pipefail on
posix off
privileged off
verbose off
vi off
xtrace on
+ cd /usr/src/Slicer-build
+ /usr/bin/cmake -E make_directory /usr/src/Slicer
+ /usr/bin/cmake -E make_directory /usr/src/Slicer-build/Slicer-build
+ /usr/bin/cmake -E make_directory /usr/src/Slicer-build/Slicer-prefix
+ /usr/bin/cmake -E make_directory /usr/src/Slicer-build/Slicer-prefix/tmp
+ /usr/bin/cmake -E make_directory /usr/src/Slicer-build/Slicer-prefix/src/Slicer-stamp
+ /usr/bin/cmake -E make_directory /usr/src/Slicer-build/Slicer-prefix/src
+ /usr/bin/cmake -E touch /usr/src/Slicer-build/Slicer-prefix/src/Slicer-stamp/Slicer-mkdir
+ cd /usr/src/Slicer-build/Slicer-prefix/src
+ /usr/bin/cmake -E echo_append
+ /usr/bin/cmake -E touch /usr/src/Slicer-build/Slicer-prefix/src/Slicer-stamp/Slicer-download
+ cd /usr/src/Slicer
+ /usr/bin/cmake -E echo_append
+ /usr/bin/cmake -E touch /usr/src/Slicer-build/Slicer-prefix/src/Slicer-stamp/Slicer-update
+ cd /usr/src/Slicer-build
+ /usr/bin/cmake -E echo_append
+ /usr/bin/cmake -E touch /usr/src/Slicer-build/Slicer-prefix/src/Slicer-stamp/Slicer-patch
+ cd /usr/src/Slicer-build/Slicer-build
+ /usr/bin/cmake -C/usr/src/Slicer-build/Slicer-prefix/tmp/Slicer-cache-Release.cmake -GNinja /usr/src/Slicer
loading initial cache file /usr/src/Slicer-build/Slicer-prefix/tmp/Slicer-cache-Release.cmake
CMake Error: The source directory "/usr/src/Slicer" does not appear to contain CMakeLists.txt.
Specify --help for usage, or press the help button on the CMake GUI.
+ exit 1
Authenticating with credentials from /Users/alexvergaragil/.docker/config.json
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x19196db]

```

---

<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [March 3, 2020, 2:48am UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/18 "2020-03-03T02:48:03Z")

</div>

I would recommend to build [SlicerExtensions](https://github.com/Slicer/Slicer/tree/master/Extensions/CMake) project, which downloads, builds, and tests a list of extensions (by default, it takes the list from ExtensionsIndex repository, but you can provide your own list instead). This project takes care of dependencies between extensinos: it builds them in the right order, and also passes all needed build directories to extensions that depend on others. This is used every night to build all the extensions.

---

<div class="post-metadata">

**Author:** ![Alex\_Vergara](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/alex_vergara/32/15205_2.png) [@Alex\_Vergara](https://discourse.slicer.org/u/Alex_Vergara)\
**Post date:** [March 4, 2020, 12:38pm UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/19 "2020-03-04T12:38:16Z")

</div>

> [@Alex\_Vergara](#):
>
> extensionsManagerModel()

I am trying to replicate the behaviour of the circleCI docker instance but I was unsuccessful. see:

```auto
alex@CRCTcalcul:~$ docker run -it slicer/slicer-base /bin/bash
Unable to find image 'slicer/slicer-base:latest' locally
latest: Pulling from slicer/slicer-base
a02a4930cb5d: Already exists
6a788e5d573f: Already exists
a9afa5c4a530: Already exists
6383f75ec3ac: Already exists
ec1353604d1f: Already exists
a6a7f5d80d82: Already exists
87bee5282cdd: Already exists
63309cde1def: Pull complete
Digest: sha256:4a69f356475c2974de6d35722474f674912300ee01ee50e3b8ff418bbc31865d
Status: Downloaded newer image for slicer/slicer-base:latest
[root@72bd75fc099d Slicer-build]# cd /usr/src/Slicer
bash: cd: /usr/src/Slicer: No such file or directory
[root@72bd75fc099d Slicer-build]# ../Slicer-build/BuildSlicer.sh
+ set -o pipefail
+ set -o
allexport off
braceexpand on
emacs off
errexit on
errtrace off
functrace off
hashall on
histexpand off
history off
ignoreeof off
interactive-comments	on
keyword off
monitor off
noclobber off
noexec off
noglob off
nolog off
notify off
nounset off
onecmd off
physical off
pipefail on
posix off
privileged off
verbose off
vi off
xtrace on
+ cd /usr/src/Slicer-build
+ /usr/bin/cmake -E make_directory /usr/src/Slicer
+ /usr/bin/cmake -E make_directory /usr/src/Slicer-build/Slicer-build
+ /usr/bin/cmake -E make_directory /usr/src/Slicer-build/Slicer-prefix
+ /usr/bin/cmake -E make_directory /usr/src/Slicer-build/Slicer-prefix/tmp
+ /usr/bin/cmake -E make_directory /usr/src/Slicer-build/Slicer-prefix/src/Slicer-stamp
+ /usr/bin/cmake -E make_directory /usr/src/Slicer-build/Slicer-prefix/src
+ /usr/bin/cmake -E touch /usr/src/Slicer-build/Slicer-prefix/src/Slicer-stamp/Slicer-mkdir
+ cd /usr/src/Slicer-build/Slicer-prefix/src
+ /usr/bin/cmake -E echo_append
+ /usr/bin/cmake -E touch /usr/src/Slicer-build/Slicer-prefix/src/Slicer-stamp/Slicer-download
+ cd /usr/src/Slicer
+ /usr/bin/cmake -E echo_append
+ /usr/bin/cmake -E touch /usr/src/Slicer-build/Slicer-prefix/src/Slicer-stamp/Slicer-update
+ cd /usr/src/Slicer-build
+ /usr/bin/cmake -E echo_append
+ /usr/bin/cmake -E touch /usr/src/Slicer-build/Slicer-prefix/src/Slicer-stamp/Slicer-patch
+ cd /usr/src/Slicer-build/Slicer-build
+ /usr/bin/cmake -C/usr/src/Slicer-build/Slicer-prefix/tmp/Slicer-cache-Release.cmake -GNinja /usr/src/Slicer
loading initial cache file /usr/src/Slicer-build/Slicer-prefix/tmp/Slicer-cache-Release.cmake
CMake Error: The source directory "/usr/src/Slicer" does not appear to contain CMakeLists.txt.
Specify --help for usage, or press the help button on the CMake GUI.
+ exit 1
[root@72bd75fc099d Slicer-build]#

```

I want to create an image with Slicer extensions built by default.

---

<div class="post-metadata">

**Author:** ![Alex\_Vergara](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/alex_vergara/32/15205_2.png) [@Alex\_Vergara](https://discourse.slicer.org/u/Alex_Vergara)\
**Post date:** [March 4, 2020, 1:58pm UTC](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444/20 "2020-03-04T13:58:26Z")

</div>

Also, Is there a way to specify explicitly the list of extensions to make?

[Next page](https://discourse.slicer.org/t/required-extension-not-being-installed-in-tests/9444.md?page=2)