Remove incremental install altogether

.github/workflows/CI.yml

@@ -87,15 +87,6 @@ jobs:
           COVERALLS_PARALLEL: true
         run: coveralls --service=github
 
-  incremental_install:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - name: "Build incremental install"
-        run: docker build -t pysr -f pysr/test/incremental_install_simulator.dockerfile .
-      - name: "Test incremental install"
-        run: docker run --rm pysr /bin/bash -l -c 'python3 -m pysr test main && python3 -m pysr test env'
-
   conda_test:
     runs-on: ${{ matrix.os }}
     defaults:

pysr/test/incremental_install_simulator.dockerfile

@@ -1,52 +0,0 @@
-# This dockerfile simulates a user installation that first
-# builds PySR for Python 3.9, and then upgrades to Python 3.10.
-# Normally this would cause an error when installing PyCall, so we want to
-# ensure that PySR can automatically patch things.
-FROM debian:bullseye-slim
-
-ENV DEBIAN_FRONTEND=noninteractive
-
-# Install juliaup and pyenv:
-RUN apt-get update && apt-get install -y curl git build-essential \
-    libssl-dev zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev \
-    libncurses5-dev libncursesw5-dev xz-utils libffi-dev liblzma-dev && \
-    apt-get clean && \
-    rm -rf /var/lib/apt/lists/*
-
-# Install juliaup:
-RUN curl -fsSL https://install.julialang.org | sh -s -- -y
-
-# Install pyenv:
-RUN curl -fsSL curl https://pyenv.run | sh && \
-    echo 'export PATH="/root/.pyenv/bin:$PATH"' >> ~/.bashrc && \
-    echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bashrc && \
-    echo 'eval "$(pyenv init -)"' >> ~/.bashrc && \
-    echo 'eval "$(pyenv virtualenv-init -)"' >> ~/.bashrc
-
-# Default to using bash -l:
-SHELL ["/bin/bash", "-l", "-c"]
-
-RUN juliaup add 1.8 && juliaup default 1.8
-RUN pyenv install 3.9.2 && pyenv global 3.9.2
-RUN python3 -m pip install --upgrade pip
-
-# Get PySR source:
-WORKDIR /pysr
-ADD ./requirements.txt /pysr/requirements.txt
-RUN python3 -m pip install --no-cache-dir -r /pysr/requirements.txt
-
-ADD ./pyproject.toml /pysr/pyproject.toml
-ADD ./setup.py /pysr/setup.py
-ADD ./pysr/ /pysr/pysr/
-
-# First install of PySR:
-RUN python3 -m pip install --no-cache-dir .
-RUN python3 -c 'import pysr'
-
-# Change Python version:
-RUN pyenv install 3.10 && pyenv global 3.10 && pyenv uninstall -f 3.9.2
-RUN python3 -m pip install --upgrade pip
-
-# Second install of PySR:
-RUN python3 -m pip install .
-RUN python3 -c 'import pysr' && python3 -c 'from pysr.sr import jl; jl.seval("@assert VERSION < v\"1.9\"")'