stop supporting EOL python

.gitlab-ci.yml

@@ -41,14 +41,6 @@ build-env:debian:
       --dockerfile $CI_PROJECT_DIR/docker/Dockerfile.debian
       --destination $CI_REGISTRY_IMAGE/debian
 
-build-env:conda:
-  <<: *build-env
-  script:
-    - /kaniko/executor
-      --context $CI_PROJECT_DIR/docker
-      --dockerfile $CI_PROJECT_DIR/docker/Dockerfile.conda
-      --destination $CI_REGISTRY_IMAGE/conda
-
 build-env:default:
   <<: *build-env
   script:
@@ -73,25 +65,25 @@ build-env:default:
 
 .stable-env: &stable_env
   before_script:
-    - source deactivate
-    - source activate kwant-stable
+    - eval "$(micromamba shell hook --shell bash)"
+    - micromamba activate kwant-stable
 
 .no-extras-env: &no_extras_env
   before_script:
-    - source deactivate
-    - source activate kwant-stable-no-extras
+    - eval "$(micromamba shell hook --shell bash)"
+    - micromamba activate kwant-stable-no-extras
 
 # Note that this is 'latest' as of when the image was last built
 .latest-env: &latest_env
   before_script:
-    - source deactivate
-    - source activate kwant-latest
+    - eval "$(micromamba shell hook --shell bash)"
+    - micromamba activate kwant-latest
 
 .bleeding-edge-env: &bleeding_edge_env
   before_script:
-    - source deactivate
-    - conda env update -f /kwant-latest.yml
-    - source activate kwant-latest
+    - eval "$(micromamba shell hook --shell bash)"
+    - micromamba env update -f /kwant-latest.yml
+    - micromamba activate kwant-latest
 
 .ubuntu-env: &ubuntu_env
   image: gitlab.kwant-project.org:5005/kwant/kwant/ubuntu

INSTALL.rst

@@ -29,10 +29,10 @@ Prerequisites
 =============
 
 Building Kwant requires
- * `Python <https://www.python.org/>`_ 3.7 or above,
- * `NumPy <https://numpy.org/>`_ 1.16.2 or newer,
- * `SciPy <https://www.scipy.org/>`_ 1.1.0 or newer,
- * `LAPACK <https://netlib.org/lapack/>`_ and `BLAS <https://netlib.org/blas/>`_,
+ * `Python <https://www.python.org/>`_ 3.8 or above,
+ * `NumPy <http://numpy.org/>`_ 1.11.0 or newer,
+ * `SciPy <https://www.scipy.org/>`_ 0.17.0 or newer,
+ * `LAPACK <http://netlib.org/lapack/>`_ and `BLAS <http://netlib.org/blas/>`_,
    (For best performance we recommend the free `OpenBLAS
    <https://www.openblas.net/>`_ or the nonfree `MKL
    <https://software.intel.com/en-us/intel-mkl>`_.)

docker/Dockerfile.conda

-FROM conda/miniconda3:latest
+FROM mambaorg/micromamba:1.5.5-jammy
 
 ENV LANG C.UTF-8
 ENV LC_ALL C.UTF-8
 ENV DEBIAN_FRONTEND noninteractive
+ENV TZ Etc/UTC
 
+USER root
 RUN apt-get update && apt-get install -y --no-install-recommends \
         # all the hard non-Python dependencies
         git make patch build-essential \
@@ -14,10 +16,9 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     && apt-get clean && \
     rm -rf /var/lib/apt/lists/*
 
-COPY kwant-latest.yml kwant-stable.yml kwant-stable-no-extras.yml /
+USER $MAMBA_USER
+COPY --chown=$MAMBA_USER:$MAMBA_USER kwant-latest.yml kwant-stable.yml kwant-stable-no-extras.yml /
 
-RUN conda env create -qf kwant-stable.yml
-RUN conda env create -qf kwant-stable-no-extras.yml
-RUN conda env create -qf kwant-latest.yml
-
-RUN /usr/local/envs/kwant-latest/bin/python -m ipykernel install --user --name kwant-latest
+RUN micromamba env create -f /kwant-stable.yml
+RUN micromamba env create -f /kwant-stable-no-extras.yml
+RUN micromamba env create -f /kwant-latest.yml

docker/Dockerfile.debian

-FROM debian:buster
+FROM debian:latest
 
 ENV LANG C.UTF-8
 ENV LC_ALL C.UTF-8
@@ -8,7 +8,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
         gnupg dirmngr apt-transport-https ca-certificates curl software-properties-common
 
 RUN echo "deb https://downloads.kwant-project.org/debian/ stable main" >> /etc/apt/sources.list && \
-    apt-key adv --no-tty --keyserver pool.sks-keyservers.net --recv-key C3F147F5980F3535 && \
+    apt-key adv --no-tty --keyserver keyserver.ubuntu.com --recv-key C3F147F5980F3535 && \
     apt-get update && apt-get install -y --no-install-recommends \
         # all the hard non-Python dependencies
         git g++ make patch gfortran libblas-dev liblapack-dev \
@@ -27,10 +27,10 @@ RUN pip3 install \
     qsymm==1.3.0
 
 ### install build and testing dependencies
-RUN pip3 install \
+RUN pip3 install --break-system-packages\
       cython \
       pytest \
       pytest-runner \
       pytest-cov \
       pytest-flakes \
-      pytest-pep8
+      pytest-pep8 \

docker/Dockerfile.ubuntu

-FROM ubuntu:20.04
+FROM ubuntu:22.04
 
 ENV LANG C.UTF-8
 ENV LC_ALL C.UTF-8
 ENV DEBIAN_FRONTEND noninteractive
+ENV TZ Etc/UTC
+
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
         gnupg dirmngr apt-transport-https software-properties-common

docker/kwant-latest.yml

@@ -2,7 +2,7 @@ name: kwant-latest
 channels:
     - conda-forge
 dependencies:
-    - python=3.9
+    - python=3.12
     - pip
     - numpy
     - scipy
@@ -11,12 +11,13 @@ dependencies:
     - matplotlib-base
     - plotly
     - qsymm
-    # Linear algebra libraraies
-    - mumps
-    - blas #=1.1 openblas
-    - openblas #=0.2.20
+    # Linear algebra libraries
+    # Pin mumps due to switching int size in 5.5.1
+    - mumps-seq=5.2.1
+    - blas
+    - openblas
     # Build toolchain
-    - toolchain3
+    - compilers
     - cython
     - libgfortran
     ## Dev Dependencies
@@ -26,9 +27,9 @@ dependencies:
     - pytest-flakes
     - pytest-pep8
     # Documentation building
+    - sphinx
     - numpydoc
     - requests
     - jupyter_sphinx
     - pip:
-        - git+https://github.com/sphinx-doc/sphinx.git@bedbb8c8259f1b4520ed654ffda3a045c55163d7
         - sphinxcontrib-svg2pdfconverter

docker/kwant-stable-no-extras.yml

@@ -2,15 +2,15 @@ name: kwant-stable-no-extras
 channels:
     - conda-forge
 dependencies:
-    - python=3.7
-    - numpy=1.16.2
-    - scipy=1.1.0
-    - tinyarray=1.2
-    # Linear algebra libraraies
+    - python=3.8
+    - numpy=1.18
+    - scipy=1.3
+    - tinyarray=1.2.2
+    # Linear algebra libraries
     - blas #=1.1 openblas
     - openblas #=0.2.20
     # Build toolchain
-    - toolchain3
+    - compilers
     - cython
     - libgfortran
     ## Dev Dependencies
@@ -19,3 +19,7 @@ dependencies:
     - pytest-cov
     - pytest-flakes
     - pytest-pep8
+    # Documentation building
+    - sphinx=2.4.4  # later versions seem to have problems
+    - numpydoc
+    - requests

docker/kwant-stable.yml

@@ -2,20 +2,21 @@ name: kwant-stable
 channels:
     - conda-forge
 dependencies:
-    - python=3.7
-    - numpy=1.16.2
-    - scipy=1.1.0
-    - tinyarray=1.2
-    - sympy=1.3.0
-    - matplotlib-base=3.0.2
-    - plotly=3.6.1
-    - qsymm=1.3.0
-    # Linear algebra libraraies
-    - mumps
+    - python=3.8
+    - numpy=1.18
+    - scipy=1.3
+    - tinyarray=1.2.2
+    - sympy=1.5.1
+    - matplotlib-base=3.2.2
+    - plotly=2.2.2
+    - qsymm=1.2.6
+    # Linear algebra libraries
+    # Pin mumps due to switching int size in 5.5.1
+    - mumps-seq=5.2.1
     - blas #=1.1 openblas
     - openblas #=0.2.20
     # Build toolchain
-    - toolchain3
+    - compilers
     - cython
     - libgfortran
     ## Dev Dependencies
@@ -24,3 +25,7 @@ dependencies:
     - pytest-cov
     - pytest-flakes
     - pytest-pep8
+    # Documentation building
+    - sphinx=2.4.4
+    - numpydoc
+    - requests

kwant/version.py

@@ -19,13 +19,11 @@ __all__ = []
 package_root = os.path.dirname(os.path.realpath(__file__))
 distr_root = os.path.dirname(package_root)
 
-def ensure_python(required_version=(3, 5)):
+def ensure_python(required_version=(3, 8)):
     v = sys.version_info
     if v[:3] < required_version:
         error = "This version of Kwant requires Python {} or above.".format(
             ".".join(str(p) for p in required_version))
-        if v[0] == 2:
-            error += "\nKwant 1.1 is the last version to support Python 2."
         print(error, file=sys.stderr)
         sys.exit(1)
 

setup.py

@@ -482,7 +482,8 @@ def maybe_add_numpy_include(exts):
 
 
 def main():
-    check_python_version((3, 6))
+    min_python_version = (3, 8)
+    check_python_version(min_python_version)
     check_versions()
 
     exts = collections.OrderedDict([
@@ -556,6 +557,7 @@ def main():
               # qsymm is only packaged on PyPI
               'qsymm': 'qsymm >= 1.3.0',
           },
+          python_requires=f'>={min_python_version[0]}.{min_python_version[1]}',
           classifiers=[c.strip() for c in classifiers.split('\n')])
 
 if __name__ == '__main__':