diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d97b0df0c0dc9a74fc6295aa270607a0070b6203..aeb2dfbd2c6b5608c9375d71449948d89076e6b6 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -90,33 +90,17 @@ spack:setup:
     - ci/setup_spack.sh
   needs:
     - job: spack:checkout
-  after_script:
-    - tar czf artifacts_${stack}_${environment}.tgz $stack/environment
-  artifacts:
-    paths:
-      - artifacts_${stack}_${environment}.tgz
 
 spack:install_compilers:
   stage: compilers
   extends:
     - .parallel_job
     - .spack_cache
-  before_script:
-    - if [ -e artifacts_${stack}_${environment}.tgz ];
-      then
-        tar xzf artifacts_${stack}_${environment}.tgz;
-      fi
   script:
     - ci/install_compilers.sh
     - source ci/stack_env.sh
     - ${STACK_LOCATION}/spack/bin/spack -e ${environment} config blame compilers
-  after_script:
-    - tar czf
-        artifacts_${stack}_${environment}.tgz
-        $stack/spack/var/spack/environments
   artifacts:
-    paths:
-      - artifacts_${stack}_${environment}.tgz
     reports:
       junit: spack-install-*.xml
   needs:
@@ -128,22 +112,14 @@ spack:concretize:
   extends:
     - .parallel_job
     - .spack_cache
-  before_script:
-    - if [ -e artifacts_${stack}_${environment}.tgz ];
-      then
-        tar xzf artifacts_${stack}_${environment}.tgz;
-      fi
   script:
     - source ci/stack_env.sh
-    - ${STACK_LOCATION}/spack/bin/spack -e ${environment} config blame
-    - ${STACK_LOCATION}/spack/bin/spack -e ${environment} concretize --force
-  after_script:
-    - tar czf
-        artifacts_${stack}_${environment}.tgz
-        $stack/spack/var/spack/environments
+    - ${STACK_LOCATION}/spack/bin/spack -e ${environment} config blame | tess config.log
+    - ${STACK_LOCATION}/spack/bin/spack -e ${environment} concretize --force | tee concretize.log
   artifacts:
     paths:
-      - artifacts_${stack}_${environment}.tgz
+      - config.log
+      - concretize.log
   needs:
     - job: spack:install_compilers
   timeout: 5h
@@ -153,11 +129,6 @@ spack:install:
   extends:
     - .parallel_job
     - .spack_cache
-  before_script:
-    - if [ -e artifacts_${stack}_${environment}.tgz ];
-      then
-        tar xzf artifacts_${stack}_${environment}.tgz;
-      fi
   script:
     - source ci/stack_env.sh
     - echo "{}" > spack-install-${environment}.xml
@@ -174,15 +145,9 @@ spack:install:
       --update-index
       --key EDC904DCE3D2E84E
       /buildcache
-  after_script:
-    - tar czf
-        artifacts_${stack}_${environment}.tgz
-        $stack/spack/var/spack/environments
   needs:
     - job: spack:concretize
   artifacts:
-    paths:
-      - artifacts_${stack}_${environment}.tgz
     reports:
       junit: spack-install-*.xml
   timeout: 10h