Update SymPy Dependency + Pipeline Cleanup

This MR

• raises the upper limit for SymPy to 1.12.1
• introduces a weekly test run against the latest sympy pre-release
• cleans up the CI configuration a bit

Closes #91 (closed)

.gitlab-ci.yml

@@ -23,9 +23,6 @@ stages:
 tests-and-coverage:
   stage: pretest
   extends: .every-commit
-  except:
-    variables:
-      - $ENABLE_NIGHTLY_BUILDS
   image: i10git.cs.fau.de:5005/pycodegen/pycodegen/full
   before_script:
     - pip install -e .
@@ -80,9 +77,6 @@ tests-and-coverage-with-longrun:
 latest-python:
   stage: test
   extends: .every-commit
-  except:
-    variables:
-      - $ENABLE_NIGHTLY_BUILDS
   image: i10git.cs.fau.de:5005/pycodegen/pycodegen/latest_python
   before_script:
     - pip install -e .
@@ -107,9 +101,6 @@ latest-python:
 # Minimal tests in windows environment
 #minimal-windows:
 #  stage: test
-#  except:
-#    variables:
-#      - $ENABLE_NIGHTLY_BUILDS
 #  tags:
 #    - win
 #  script:
@@ -124,9 +115,6 @@ latest-python:
 ubuntu:
   stage: test
   extends: .every-commit
-  except:
-    variables:
-      - $ENABLE_NIGHTLY_BUILDS
   image: i10git.cs.fau.de:5005/pycodegen/pycodegen/ubuntu
   before_script:
     - ln -s /usr/include/locale.h /usr/include/xlocale.h
@@ -151,9 +139,6 @@ ubuntu:
 .multiarch_template:
   stage: test
   extends: .every-commit
-  except:
-    variables:
-      - $ENABLE_NIGHTLY_BUILDS
   before_script: &multiarch_before_script
     # - pip3 install -v .
     - export PYTHONPATH=src
@@ -239,9 +224,6 @@ minimal-conda:
 minimal-sympy-master:
   stage: test
   extends: .every-commit
-  except:
-    variables:
-      - $ENABLE_NIGHTLY_BUILDS
   image: i10git.cs.fau.de:5005/pycodegen/pycodegen/minimal_conda
   before_script:
     - pip install -e .
@@ -331,9 +313,6 @@ nightly-sympy:
 flake8-lint:
   stage: pretest
   extends: .every-commit
-  except:
-    variables:
-      - $ENABLE_NIGHTLY_BUILDS
   image: i10git.cs.fau.de:5005/pycodegen/pycodegen/full
   script:
     - flake8 src/pystencils