Support the concept of .ebp patch file or similar, for local site modifications

[fgeorgatos]

This in effect will allow to store patchfiles at local HPC sites as opposed to complete easyconfigs, which has the important advantage of allowing to benefit from upstream updates & bugfixes (think of MPI stacks that require local tuning, about this).

I think the following will help understand the use-case:

sw@gaia-13:~$ diff uni.lu-customizations/OpenMPI-1.4.5-GCC-4.6.3-no-OFED.eb /opt/apps/HPCBIOS.20130301/software/EasyBuild/1.2.0/lib/python2.6/site-packages/easybuild_easyconfigs-1.2.0.0-py2.6.egg/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.4.5-GCC-4.6.3-no-OFED.eb
13c13
< configopts = '--with-threads=posix --enable-shared --enable-mpi-threads '

---
> configopts = '--with-threads=posix --enable-shared --enable-mpi-threads'
16,19d15
<
< # FG, 20130306; customization for University of Luxembourg systems
< patches += ['openmpi-mca-params.conf-unilu.patch']
< configopts += '--with-openib --enable-mpirun-prefix-by-default '
sw@gaia-13:~$ cat uni.lu-customizations/openmpi-mca-params.conf-unilu.patch
--- opal/etc/openmpi-mca-params.conf.orig   2009-12-08 21:36:08.000000000 +0100
+++ opal/etc/openmpi-mca-params.conf    2013-03-06 08:13:21.216969244 +0100
@@ -56,3 +56,8 @@

 # See "ompi_info --param all all" for a full listing of Open MPI MCA
 # parameters available and their default values.
+
+# FG, 20130306; customization for University of Luxembourg systems
+btl_openib_if_exclude=mlx4_1
+btl_openib_warn_nonexistent_if=0
+plm_rsh_agent=oarsh

It is important to support this in the framework, to allow automated pick-up of such diffs during robotic builds with dependencies etc.

[boegel]

To be more clear: this is intended to support easyconfig-specific customizations easily.

When EasyBuild finds a .ebp file alongside the .eb file, or in some directory that is specified, it would first alter the .eb file with the .ebp 'patch' before performing the build.

[stdweird]

what do you want to save in the local repo? both files, or the result sfer patching?

[boegel]

The result, imho, since it's a local repo.

When we add the feature to automagically start pushing easyconfigs that worked upstream, that's another issue...

[fgeorgatos]

I can see 3 levels of patches:

1. diff on the easyconfig itself
2. a parameter for patches=bla (ie. patch the sources of a package) # this may be doable manually with --amend.
3. diff on the produced modulefile # OK, this is basically hack you should rather avoid

(1) allows also for (2) and has the advantage that you don't miss the upgrades/bugfixes from upstream, so easily.
I'd opt for storing these diffs as .epb, along with patchfiles to help in the mission of (2)...

My gut feeling says that the above is generic enough to cover plenty of needs, but time will tell us what's right!

[boegel]

Having this in place would also allow to scratch the ignoring of CPU throttling in the ATLAS easyconfigs we ship, and simply use .ebp easyconfig patches that enable the ignoring when required (cfr. easybuilders/easybuild-easyconfigs#441).

[fgeorgatos]

fyi. this is extracted as-is from the customization of MPI stacks and TotalView on this end, to prove the issue:
(important: notice that eg. different OpenMPI stack versions may need different customization or patch)

[583][fotis.ctfwork_: /Users/fotis/uni.lu/easybuild-easyconfigs/easybuild/easyconfigs]$ git diff
diff --git a/easybuild/easyconfigs/i/impi/impi-4.0.0.028-32bit.eb b/easybuild/easyconfigs/i/impi/impi-4.0.0.028-32bit.eb
index c1fe77f..800e093 100644
--- a/easybuild/easyconfigs/i/impi/impi-4.0.0.028-32bit.eb
+++ b/easybuild/easyconfigs/i/impi/impi-4.0.0.028-32bit.eb
@@ -20,3 +20,7 @@ import os
 license_file = os.path.join(os.getenv('HOME'), "licenses", "intel", "license.lic")

 m32 = True
+
+
+# added by EasyBuild as dictated by command line options
+modextravars = {"I_MPI_MPD_RSH": "oarsh"}
diff --git a/easybuild/easyconfigs/i/impi/impi-4.0.0.028.eb b/easybuild/easyconfigs/i/impi/impi-4.0.0.028.eb
index 02fa80a..60ac55a 100644
--- a/easybuild/easyconfigs/i/impi/impi-4.0.0.028.eb
+++ b/easybuild/easyconfigs/i/impi/impi-4.0.0.028.eb
@@ -17,3 +17,7 @@ dontcreateinstalldir = 'True'
 # license file
 import os
 license_file = os.path.join(os.getenv('HOME'), "licenses", "intel", "license.lic")
+
+
+# added by EasyBuild as dictated by command line options
+modextravars = {"I_MPI_MPD_RSH": "oarsh"}
diff --git a/easybuild/easyconfigs/i/impi/impi-4.0.2.003.eb b/easybuild/easyconfigs/i/impi/impi-4.0.2.003.eb
index 3e513a0..748eec6 100644
--- a/easybuild/easyconfigs/i/impi/impi-4.0.2.003.eb
+++ b/easybuild/easyconfigs/i/impi/impi-4.0.2.003.eb
@@ -19,3 +19,7 @@ dontcreateinstalldir = 'True'
 # license file
 import os
 license_file = os.path.join(os.getenv('HOME'), "licenses", "intel", "license.lic")
+
+
+# added by EasyBuild as dictated by command line options
+modextravars = {"I_MPI_MPD_RSH": "oarsh"}
diff --git a/easybuild/easyconfigs/i/impi/impi-4.1.0.027.eb b/easybuild/easyconfigs/i/impi/impi-4.1.0.027.eb
index 72b72e7..bde28cb 100644
--- a/easybuild/easyconfigs/i/impi/impi-4.1.0.027.eb
+++ b/easybuild/easyconfigs/i/impi/impi-4.1.0.027.eb
@@ -17,3 +17,7 @@ dontcreateinstalldir = 'True'
 # license file
 import os
 license_file = os.path.join(os.getenv('HOME'), "licenses", "intel", "license.lic")
+
+
+# added by EasyBuild as dictated by command line options
+modextravars = {"I_MPI_MPD_RSH": "oarsh"}
diff --git a/easybuild/easyconfigs/i/impi/impi-4.1.0.030.eb b/easybuild/easyconfigs/i/impi/impi-4.1.0.030.eb
index 5d906bc..ae37dd6 100644
--- a/easybuild/easyconfigs/i/impi/impi-4.1.0.030.eb
+++ b/easybuild/easyconfigs/i/impi/impi-4.1.0.030.eb
@@ -17,3 +17,7 @@ dontcreateinstalldir = 'True'
 # license file
 import os
 license_file = os.path.join(os.getenv('HOME'), "licenses", "intel", "license.lic")
+
+
+# added by EasyBuild as dictated by command line options
+modextravars = {"I_MPI_MPD_RSH": "oarsh"}
diff --git a/easybuild/easyconfigs/i/impi/impi-4.1.1.036.eb b/easybuild/easyconfigs/i/impi/impi-4.1.1.036.eb
index a6158d1..3f81883 100644
--- a/easybuild/easyconfigs/i/impi/impi-4.1.1.036.eb
+++ b/easybuild/easyconfigs/i/impi/impi-4.1.1.036.eb
@@ -17,3 +17,7 @@ dontcreateinstalldir = 'True'
 # license file
 import os
 license_file = os.path.join(os.getenv('HOME'), "licenses", "intel", "license.lic")
+
+
+# added by EasyBuild as dictated by command line options
+modextravars = {"I_MPI_MPD_RSH": "oarsh"}
diff --git a/easybuild/easyconfigs/m/MPICH/MPICH-3.0.3-ClangGCC-1.1.3.eb b/easybuild/easyconfigs/m/MPICH/MPICH-3.0.3-ClangGCC-1.1.3.eb
index 99806a5..1ed6634 100644
--- a/easybuild/easyconfigs/m/MPICH/MPICH-3.0.3-ClangGCC-1.1.3.eb
+++ b/easybuild/easyconfigs/m/MPICH/MPICH-3.0.3-ClangGCC-1.1.3.eb
@@ -21,3 +21,5 @@ sanity_check_paths = {
 }

 moduleclass = 'mpi'
+
+modextravars = {"HYDRA_LAUNCHER_EXEC": "oarsh", "HYDRA_IFACE": "ib0"}
diff --git a/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.7-GCC-4.6.3-hwloc-chkpt.eb b/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.7-GCC-4.6.3-hwloc-chkpt.eb
index 8d81812..9ab7122 100644
--- a/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.7-GCC-4.6.3-hwloc-chkpt.eb
+++ b/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.7-GCC-4.6.3-hwloc-chkpt.eb
@@ -31,3 +31,5 @@ builddependencies = [('Bison', '2.5')]
 parallel = 1

 moduleclass = 'mpi'
+
+modextravars = {"HYDRA_LAUNCHER_EXEC": "oarsh"}
diff --git a/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.7-GCC-4.6.3.eb b/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.7-GCC-4.6.3.eb
index 19e6c4d..be06f5d 100644
--- a/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.7-GCC-4.6.3.eb
+++ b/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.7-GCC-4.6.3.eb
@@ -7,12 +7,10 @@ It is based on MPICH2 and MVICH."""

 toolchain = {'name': 'GCC', 'version': '4.6.3'}

-sources = ['%(namelower)s-%(version)s.tgz']
+sources = ['%s-%s.tgz' % (name.lower(), version)]
 # note: this URL will only work for the most recent version (previous versions no longer available?)
 source_urls = ['http://mvapich.cse.ohio-state.edu/download/mvapich2']

-builddependencies = [('Bison', '2.5')]
-
 rdma_type = "gen2" # 'gen2' or 'udapl'

 ## enable building of MPE routines
@@ -22,3 +20,5 @@ withmpe = True
 parallel = 1

 moduleclass = 'mpi'
+
+modextravars = {"HYDRA_LAUNCHER_EXEC": "oarsh"}
diff --git a/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.8.1-GCC-4.7.2.eb b/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.8.1-GCC-4.7.2.eb
index 2b6e8df..1ef48df 100644
--- a/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.8.1-GCC-4.7.2.eb
+++ b/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.8.1-GCC-4.7.2.eb
@@ -7,11 +7,11 @@ description = "This is an MPI-2 implementation (conforming to MPI 2.1 standard)
 toolchain = {'name': 'GCC', 'version': '4.7.2'}

 source_urls = ['http://mvapich.cse.ohio-state.edu/download/mvapich2/']
-sources = ['%(namelower)s-%(version)s.tgz']
-
-builddependencies = [('Bison', '2.7')]
+sources = ['mvapich2-%s.tgz' % version]

 # parallel build doesn't work
 parallel = 1

 moduleclass = 'mpi'
+
+modextravars = {"HYDRA_LAUNCHER_EXEC": "oarsh"}
diff --git a/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.9-ClangGCC-1.1.3.eb b/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.9-ClangGCC-1.1.3.eb
index fd7d023..875a9bd 100644
--- a/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.9-ClangGCC-1.1.3.eb
+++ b/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.9-ClangGCC-1.1.3.eb
@@ -12,3 +12,5 @@ sources = ['mvapich2-%s.tgz' % version]
 dependencies = [('Bison', '2.7')]

 moduleclass = 'mpi'
+
+modextravars = {"HYDRA_LAUNCHER_EXEC": "oarsh"}
diff --git a/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.9-ClangGCC-1.2.3.eb b/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.9-ClangGCC-1.2.3.eb
index 229478e..18603ff 100644
--- a/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.9-ClangGCC-1.2.3.eb
+++ b/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.9-ClangGCC-1.2.3.eb
@@ -12,3 +12,5 @@ sources = ['mvapich2-%s.tgz' % version]
 dependencies = [('Bison', '2.7')]

 moduleclass = 'mpi'
+
+modextravars = {"HYDRA_LAUNCHER_EXEC": "oarsh"}
diff --git a/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.9-GCC-4.7.3.eb b/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.9-GCC-4.7.3.eb
index 9ff3ca9..77ddf70 100644
--- a/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.9-GCC-4.7.3.eb
+++ b/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.9-GCC-4.7.3.eb
@@ -12,3 +12,5 @@ sources = ['%(namelower)s-%(version)s.tgz']
 builddependencies = [('Bison', '2.7')]

 moduleclass = 'mpi'
+
+modextravars = {"HYDRA_LAUNCHER_EXEC": "oarsh"}
diff --git a/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.9-iccifort-2011.13.367.eb b/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.9-iccifort-2011.13.367.eb
index b140cf3..49d3f15 100644
--- a/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.9-iccifort-2011.13.367.eb
+++ b/easybuild/easyconfigs/m/MVAPICH2/MVAPICH2-1.9-iccifort-2011.13.367.eb
@@ -16,3 +16,5 @@ builddependencies = [('Bison', '2.7', '', ('ictce', '4.1.13'))]
 preconfigopts = 'LDFLAGS="-Wl,-rpath,$EBROOTICC/compiler/lib/intel64 $LDFLAGS"'

 moduleclass = 'mpi'
+
+modextravars = {"HYDRA_LAUNCHER_EXEC": "oarsh"}
diff --git a/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.4.5-GCC-4.6.3-no-OFED.eb b/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.4.5-GCC-4.6.3-no-OFED.eb
index 368b930..35aadca 100644
--- a/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.4.5-GCC-4.6.3-no-OFED.eb
+++ b/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.4.5-GCC-4.6.3-no-OFED.eb
@@ -13,7 +13,7 @@ source_urls = ['http://www.open-mpi.org/software/ompi/v%s/downloads' % '.'.join(
 configopts = '--with-threads=posix --enable-shared --enable-mpi-threads --without-openib '
 configopts += '--enable-mpirun-prefix-by-default '  # suppress failure modes in relation to mpirun path

-patches = ['pax_disable.patch']
+patches = ['openmpi-mca-params.conf-1.4.5-local.patch', 'pax_disable.patch']

 sanity_check_paths = {
     'files': ["bin/%s" % binfile for binfile in ["ompi_info", "opal_wrapper", "orterun"]] +
diff --git a/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.4.5-GCC-4.6.3.eb b/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.4.5-GCC-4.6.3.eb
index 9e7974c..b000920 100644
--- a/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.4.5-GCC-4.6.3.eb
+++ b/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.4.5-GCC-4.6.3.eb
@@ -12,12 +12,7 @@ source_urls = ['http://www.open-mpi.org/software/ompi/v%s/downloads' % '.'.join(
 configopts = '--with-threads=posix --enable-shared --enable-mpi-threads --with-openib '
 configopts += '--enable-mpirun-prefix-by-default '  # suppress failure modes in relation to mpirun path

-# needed for --with-openib
-if OS_NAME in ['debian', 'ubuntu']:
-    osdependencies = ['libibverbs-dev']
-else:
-    # OK for OS_NAME == redhat, fedora, RHEL, SL, centos
-    osdependencies = ['libibverbs-devel']
+patches = ['openmpi-mca-params.conf-1.4.5-local.patch', 'pax_disable.patch']

 sanity_check_paths = {
     'files': ["bin/%s" % binfile for binfile in ["ompi_info", "opal_wrapper", "orterun"]] +
diff --git a/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.3-iccifort-2011.13.367.eb b/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.3-iccifort-2011.13.367.eb
index 368fd7f..09abaf2 100644
--- a/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.3-iccifort-2011.13.367.eb
+++ b/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.3-iccifort-2011.13.367.eb
@@ -36,3 +36,5 @@ sanity_check_paths = {
 }

 moduleclass = 'mpi'
+
+patches = ['openmpi-mca-params.conf-1.6.4-local.patch', 'pax_disable.patch']
diff --git a/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.4-ClangGCC-1.1.3.eb b/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.4-ClangGCC-1.1.3.eb
index 1a944e1..46a9d08 100644
--- a/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.4-ClangGCC-1.1.3.eb
+++ b/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.4-ClangGCC-1.1.3.eb
@@ -35,3 +35,5 @@ sanity_check_paths = {
 }

 moduleclass = 'mpi'
+
+patches = ['openmpi-mca-params.conf-1.6.4-local.patch', 'pax_disable.patch']
diff --git a/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.4-GCC-4.6.4.eb b/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.4-GCC-4.6.4.eb
index 663d940..c04a29e 100644
--- a/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.4-GCC-4.6.4.eb
+++ b/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.4-GCC-4.6.4.eb
@@ -35,3 +35,5 @@ sanity_check_paths = {
 }

 moduleclass = 'mpi'
+
+patches = ['openmpi-mca-params.conf-1.6.4-local.patch', 'pax_disable.patch']
diff --git a/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.4-GCC-4.7.2.eb b/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.4-GCC-4.7.2.eb
index e142825..d32bd08 100644
--- a/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.4-GCC-4.7.2.eb
+++ b/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.4-GCC-4.7.2.eb
@@ -35,3 +35,5 @@ sanity_check_paths = {
 }

 moduleclass = 'mpi'
+
+patches = ['openmpi-mca-params.conf-1.6.4-local.patch', 'pax_disable.patch']
diff --git a/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.5-GCC-4.8.1-no-OFED.eb b/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.5-GCC-4.8.1-no-OFED.eb
index d3b9362..af0bd04 100644
--- a/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.5-GCC-4.8.1-no-OFED.eb
+++ b/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.5-GCC-4.8.1-no-OFED.eb
@@ -10,7 +10,7 @@ toolchain = {'name': 'GCC', 'version': '4.8.1'}
 sources = [SOURCELOWER_TAR_GZ]
 source_urls = ['http://www.open-mpi.org/software/ompi/v%(version_major_minor)s/downloads']

-patches = ['OpenMPI-1.6.5-vt_cupti_events.patch']
+patches = ['openmpi-mca-params.conf-1.6.4-local.patch', 'OpenMPI-1.6.5-vt_cupti_events.patch']

 configopts = '--with-threads=posix --enable-shared --enable-mpi-thread-multiple --without-openib '
 configopts += '--enable-mpirun-prefix-by-default '  # suppress failure modes in relation to mpirun path
diff --git a/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.5-GCC-4.8.1.eb b/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.5-GCC-4.8.1.eb
index ec79b10..f68b0f1 100644
--- a/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.5-GCC-4.8.1.eb
+++ b/easybuild/easyconfigs/o/OpenMPI/OpenMPI-1.6.5-GCC-4.8.1.eb
@@ -9,7 +9,7 @@ toolchain = {'name': 'GCC', 'version': '4.8.1'}
 sources = [SOURCELOWER_TAR_GZ]
 source_urls = ['http://www.open-mpi.org/software/ompi/v%(version_major_minor)s/downloads']

-patches = ['OpenMPI-1.6.5-vt_cupti_events.patch']
+patches = ['openmpi-mca-params.conf-1.6.4-local.patch', 'OpenMPI-1.6.5-vt_cupti_events.patch']

 configopts = '--with-threads=posix --enable-shared --enable-mpi-thread-multiple --with-openib '
 configopts += '--enable-mpirun-prefix-by-default '  # suppress failure modes in relation to mpirun path
diff --git a/easybuild/easyconfigs/t/TotalView/TotalView-8.11.0-0-linux-x86-64.eb b/easybuild/easyconfigs/t/TotalView/TotalView-8.11.0-0-linux-x86-64.eb
index 3a01987..91d69dd 100644
--- a/easybuild/easyconfigs/t/TotalView/TotalView-8.11.0-0-linux-x86-64.eb
+++ b/easybuild/easyconfigs/t/TotalView/TotalView-8.11.0-0-linux-x86-64.eb
@@ -35,3 +35,6 @@ import os
 license_file = os.path.join(os.getenv('HOME'), "licenses", "roguewave", "license.lic")

 moduleclass = 'debugger'
+
+# needed for uni.lu
+modextravars = {"TVDSVRLAUNCHCMD": "oarsh"}
diff --git a/easybuild/easyconfigs/t/TotalView/TotalView-8.11.0-2-linux-x86-64.eb b/easybuild/easyconfigs/t/TotalView/TotalView-8.11.0-2-linux-x86-64.eb
index f619dfb..510cf37 100644
--- a/easybuild/easyconfigs/t/TotalView/TotalView-8.11.0-2-linux-x86-64.eb
+++ b/easybuild/easyconfigs/t/TotalView/TotalView-8.11.0-2-linux-x86-64.eb
@@ -35,3 +35,6 @@ import os
 license_file = os.path.join(os.getenv('HOME'), "licenses", "roguewave", "license.lic")

 moduleclass = 'debugger'
+
+# needed for uni.lu
+modextravars = {"TVDSVRLAUNCHCMD": "oarsh"}
diff --git a/easybuild/easyconfigs/t/TotalView/TotalView-8.12.0-0-linux-x86-64.eb b/easybuild/easyconfigs/t/TotalView/TotalView-8.12.0-0-linux-x86-64.eb
index 7147f39..0447e73 100644
--- a/easybuild/easyconfigs/t/TotalView/TotalView-8.12.0-0-linux-x86-64.eb
+++ b/easybuild/easyconfigs/t/TotalView/TotalView-8.12.0-0-linux-x86-64.eb
@@ -35,3 +35,6 @@ import os
 license_file = os.path.join(os.getenv('HOME'), "licenses", "roguewave", "license.lic")

 moduleclass = 'debugger'
+
+# needed for uni.lu
+modextravars = {"TVDSVRLAUNCHCMD": "oarsh"}

[boegel]

@fgeorgatos: Thanks for sharing this, this will help us in figuring out how to properly support site customizations.

[boegel]

@jas02: you may be interested in this idea/concept w.r.t. managing site customisations of easyconfigs