chore: pixi

.gitattributes

@@ -0,0 +1,2 @@
+# SCM syntax highlighting & preventing 3-way merges
+pixi.lock merge=binary linguist-language=YAML linguist-generated=true

.github/workflows/test-spras.yml

@@ -3,29 +3,26 @@ name: Test SPRAS
 on: [push, pull_request]
 
 jobs:
-  # Installs the conda environment but does not run tests because the tests require Linux Docker images
-  conda-only:
-    name: Test conda environment
+  # Installs the pixi environment but does not run tests because the tests require Linux Docker images
+  pixi-only:
+    name: Test pixi environment
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
         os: [macos-latest, windows-latest]
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
-      - name: Install conda environment
-        uses: conda-incubator/setup-miniconda@v2
+        uses: actions/checkout@v4
+      - name: Install pixi
+        uses: prefix-dev/setup-pixi@v0.9.0
         with:
-          activate-environment: spras
-          environment-file: environment.yml
-          auto-activate-base: false
-          miniconda-version: 'latest'
-      - name: Log conda environment
-        # Log conda environment contents
-        shell: bash --login {0}
-        run: conda list
+          pixi-version: v0.53.0
+          cache: false
+          locked: false
+      - name: Log pixi environment contents
+        run: pixi list
 
-  # Runs the test code and Snakemake workflow in the conda environment
+  # Runs the test code and Snakemake workflow in the pixi environment
   test:
     name: Run tests
     # The Docker images will be pulled in both the docker job and this test job
@@ -48,32 +45,20 @@ jobs:
           sudo rm -rf /usr/share/dotnet /usr/local/lib/android
           sudo docker image prune --all --force
           sudo docker builder prune -a
-      - name: Install conda environment
-        uses: conda-incubator/setup-miniconda@v2
-        with:
-          activate-environment: spras
-          environment-file: environment.yml
-          auto-activate-base: false
-          miniconda-version: 'latest'
-      - name: Install spras in conda env
-        # Install spras in the environment using pip
-        shell: bash --login {0}
-        run: pip install .
-      - name: Log conda environment
-        # Log conda environment contents
-        shell: bash --login {0}
-        run: conda list
+      - name: Install pixi
+        uses: prefix-dev/setup-pixi@v0.9.0
+      - name: Log pixi environment contents
+        run: pixi list
       - name: Install Apptainer
         # Formerly used Singularity instead of Apptainer (see https://github.com/eWaterCycle/setup-singularity/issues/6)
         uses: eWaterCycle/setup-apptainer@v2
         with:
           # Choose version from https://github.com/apptainer/apptainer/releases
           apptainer-version: 1.3.6
       - name: Run tests
-        shell: bash --login {0}
         # Verbose output and disable stdout and stderr capturing
         # [this pytest-split workflow was borrowed from Snakemake CI]
-        run: pytest -vs --splits 2 --group ${{ matrix.test_group }}
+        run: pixi run pytest -vs --splits 2 --group ${{ matrix.test_group }}
   workflow:
     name: Run workflow
     runs-on: ${{ matrix.os }}
@@ -84,23 +69,19 @@ jobs:
       # TODO: is it worth it to make this setup into a composite action?
       - name: Checkout repository
         uses: actions/checkout@v4
-      - name: Install conda environment
-        uses: conda-incubator/setup-miniconda@v2
+      - name: Install pixi
+        uses: prefix-dev/setup-pixi@v0.9.0
         with:
-          activate-environment: spras
-          environment-file: environment.yml
-          auto-activate-base: false
-          miniconda-version: 'latest'
-      # Install spras in the environment using pip
-      - name: Install spras in conda env
-        shell: bash --login {0}
-        run: pip install .
+          pixi-version: v0.53.0
+          cache: false
+          locked: false
+      - name: Log pixi environment contents
+        run: pixi list
       - name: Run Snakemake workflow
-        shell: bash --login {0}
         # We enable high parallelization (cores 4) to test our way out of the experienced
         # race conditions from #268 and #279
         # We also enforce strict DAG evaluation to catch DAG problems before they appear as user errors. (#359)
-        run: snakemake --cores 4 --configfile config/config.yaml --show-failed-logs --strict-dag-evaluation cyclic-graph --strict-dag-evaluation functions --strict-dag-evaluation periodic-wildcards
+        run: pixi run snakemake --cores 4 --configfile config/config.yaml --show-failed-logs --strict-dag-evaluation cyclic-graph --strict-dag-evaluation functions --strict-dag-evaluation periodic-wildcards
 
   # Run pre-commit checks on source files
   pre-commit:
@@ -109,14 +90,12 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v3
-      - name: Install conda environment
-        uses: conda-incubator/setup-miniconda@v2
+      - name: Install pixi
+        uses: prefix-dev/setup-pixi@v0.9.0
         with:
-          activate-environment: spras
-          environment-file: environment.yml
-          auto-activate-base: false
-          miniconda-version: 'latest'
+          pixi-version: v0.53.0
+          cache: false
+          locked: false
       - name: Run pre-commit
-        shell: bash --login {0}
         # https://github.com/pre-commit/action/blob/576ff52938d158a24ac7e009dfa94b1455e7df99/action.yml#L19
-        run: pre-commit run --all-files --show-diff-on-failure --color=always
+        run: pixi run pre-commit run --all-files --show-diff-on-failure --color=always

.gitignore

@@ -144,3 +144,12 @@ TempMat.mat
 
 # Singularity cache
 unpacked
+
+# pixi environments
+.pixi
+pixi.lock
+*.egg-info
+
+# pixi environments
+.pixi
+*.egg-info

.pre-commit-config.yaml

@@ -1,5 +1,6 @@
 # See https://pre-commit.com for more information
 # See https://pre-commit.com/hooks.html for more hooks
+exclude: (^.pixi/|.snap)
 default_language_version:
   # Match this to the version specified in environment.yml
   python: python3.11

README.md

@@ -26,31 +26,20 @@ SPRAS requires
 
 First, download or clone this repository so that you have the Snakefile, example config file, and example data.
 
-The easiest way to install Python and the required packages is with [Anaconda](https://www.anaconda.com/download/).
-The Carpentries [Anaconda installation instructions](https://carpentries.github.io/workshop-template/#python) provide guides and videos on how to install Anaconda for your operating system.
-After installing Anaconda, you can run the following commands from the root directory of the `spras` repository
+The easiest way to install Python and the required packages is with [Pixi](https://pixi.sh/latest/installation/).
+Optionally, after installing Pixi, you can run the following commands from the root directory of the `spras` repository
 ```
-conda env create -f environment.yml
-conda activate spras
+pixi shell
 ```
-to create a conda environment with the required packages and activate that environment.
-If you have a different version of Python already, you can install the specified versions of the required packages in your preferred manner instead of using Anaconda.
+to create a pixi environment that contains all of the packages you need to use SPRAS without having to prefix them with `pixi run`.
+If you have a different version of Python already, you can install the specified versions of the required packages, as well as `go`, in your preferred manner instead of using Pixi.
 
-While the `spras` conda environment comes bundled with all of Python dependencies needed for `spras` to run, it does not yet have a working installation of `spras` itself.
-To install `spras` in the environment, finish by running the following from the root directory of the repository:
-```bash
-python -m pip install .
-```
-Use caution when pip installing directly to your computer without using some form of virtual/conda environment as this can alter your system's underlying Python modules, which could lead to unexpected behavior.
-In most cases, you should only `pip install` spras if you're already working in the `spras` conda environment!
-
-For developers, SPRAS can be installed via `pip` with the `-e` flag, as in `python -m pip install -e .`. This points Python back to the SPRAS repo so that any changes made to the source
-code are reflected in the installed module.
+The `spras` pixi environment comes bundled with all of Python dependencies needed for `spras` to run, including an installation of `spras` itself.
 
 You also need to install [Docker](https://docs.docker.com/get-docker/).
 After installing Docker, start Docker before running SPRAS.
 
-Once you have activated the conda environment and started Docker, you can run SPRAS with the example Snakemake workflow.
+Once you have activated the pixi environment and started Docker, you can run SPRAS with the example Snakemake workflow.
 From the root directory of the `spras` repository, run the command
 ```
 snakemake --cores 1 --configfile config/config.yaml
@@ -78,7 +67,7 @@ The Docker images are available on [DockerHub](https://hub.docker.com/orgs/reedc
 These wrappers are in the `spras/` subdirectory.
 
 **Test code**: Tests for the Docker wrappers and SPRAS code.
-The tests require the conda environment in `environment.yml` and Docker.
+The tests require the pixi environment via `pixi shell` and Docker.
 Run the tests with `pytest -s`.
 
 ## Singularity

Snakefile

@@ -13,8 +13,8 @@ import spras.config.config as _config
 SEP = '/'
 
 wildcard_constraints:
-    params="params-\w+",
-    dataset="\w+"
+    params=r"params-\w+",
+    dataset=r"\w+"
 
 # Elsewhere we import this as config, but in the Snakefile, the variable config is already populated
 # with the parsed config.yaml. This is done by Snakemake, which magically pipes config into this file

docs/README.md

@@ -45,10 +45,10 @@ these helpful tutorials that will prime you with some basics:
 
 ## Editing SPRAS Documentation
 
-The `spras` conda environment currently comes pre-bundled with the tools you
+The `spras` pixi environment currently comes pre-bundled with the tools you
 need to edit and build SPRAS's docs website, so the first step is making sure
 you have an active spras environment. If you don't, refer to this repo's
-[root README.md](../README.md) for instructions on installing conda and
+[root README.md](../README.md) for instructions on installing pixi and
 building/activating the `spras` env.
 
 ### Building And Viewing Your Changes

docs/contributing/index.rst

@@ -223,11 +223,11 @@ Also test the functions available in the ``Dataset`` class.
    0    True      A
 
 Note: If you get a 'no module named' error, make sure that you are
-running your interactive python session inside the SPRAS conda
+running your interactive python session inside the SPRAS pixi
 environment (your terminal should begin with ``(spras)`` instead of
-``(base)``, which can be done through ``conda activate spras``), and
-your editor's interpreter is set to using the SPRAS environment over the
-base environment (on VSCode and IntelliJ editors, this should be in the
+``(base)``, which can be done through ``pixi shell``), and your editor's
+interpreter is set to using the SPRAS environment over the base
+environment (on VSCode and IntelliJ editors, this should be in the
 bottom right.)
 
 Note the behaviors of the ``get_node_columns`` function when there are
@@ -308,15 +308,7 @@ through SPRAS with
 
    snakemake --cores 1 --configfile config/config.yaml
 
-Make sure to run the command inside the ``spras`` conda environment.
-
-If installing via ``pip`` instead of using conda, install with the ``-e
-.[dev]`` options (the full command to run from the repo root is ``python
--m pip install -e .[dev]``) so that Python picks up any changes you make
-and installs all optional development packages. Omitting the ``-e`` flag
-will prevent your changes from being reflected unless you force
-re-install, and omitting ``.[dev]`` will prevent pip from installing
-``pre-commit`` and ``pytest``.
+Make sure to run the command inside the ``spras`` pixi environment.
 
 As a workflow manager, Snakemake will consider the work described in the
 configuration file to be completed once the necessary output files have
@@ -498,9 +490,8 @@ automatically on every commit through the GitHub Actions. However,
 developers will benefit from setting up their environment to run the
 same tests locally while they modify the SPRAS source.
 
-The ``pre-commit`` package is installed as part of the conda environment
-in ``environment.yml``, or when installing SPRAS with ``python -m pip
-install -e .[dev]``. From there, the pre-commit `quick start
+The ``pre-commit`` package is installed as part of the pixi environment
+in ``pyproject.toml``. From there, the pre-commit `quick start
 <https://pre-commit.com/#quick-start>`__ guide explains two primary ways
 to use it locally:
 

docs/htcondor.rst

@@ -97,14 +97,14 @@ To run in the local CHTC pool, omit the ``+WantGlideIn`` and
 
 Parallelizing SPRAS workflows with HTCondor requires the same setup as
 the previous section, but with two additions. First, it requires an
-activated SPRAS conda environment with a ``pip install``-ed version of
+activated SPRAS pixi environment with a ``pip install``-ed version of
 the SPRAS module (via ``pip install .`` inside the SPRAS directory).
 
 Second, it requires an experimental executor for HTCondor that has been
 forked from the upstream `HTCondor Snakemake executor
 <https://github.com/htcondor/snakemake-executor-plugin-htcondor>`__.
 
-After activating your ``spras`` conda environment and ``pip``-installing
+After activating your ``spras`` pixi environment and ``pip``-installing
 SPRAS, you can install the HTCondor Snakemake executor with the
 following:
 
@@ -190,8 +190,8 @@ jobs, but the workflow can use Snakemake's checkpointing to pick up any
 jobs where they left off.
 
 **Note**: If you encounter an error that says ``No module named
-'spras'``, make sure you've ``pip install``-ed the SPRAS module into
-your conda environment.
+'spras'``, make sure you've enabled the ``pixi`` environment with ``pixi
+shell``.
 
 ****************
  Job Monitoring
@@ -255,9 +255,9 @@ containing:
    raise CredsError("Credentials not found for this workflow")
 
 it indicates you must upgrade the version of the HTCondor Snakemake
-executor bundled with your conda environment.
+executor bundled with your pixi environment.
 
-To upgrade, from your activated ``spras`` conda environment run:
+To upgrade, from your activated ``spras`` pixi environment run:
 
 .. code:: bash
 
@@ -283,4 +283,4 @@ executor repository
 inspecting the commit history.
 
 If the preceding steps did not update the installed version, you may
-need to delete and rebuild your ``spras`` conda environment.
+need to delete and rebuild your ``spras`` pixi environment.

docs/install.rst

@@ -5,19 +5,18 @@
 SPRAS provides several convenient ways to use the package, depending on
 your needs
 
-***************************
- Using a Conda Environment
-***************************
+************
+ Using Pixi
+************
 
 If you want to run spras locally on your machine, you can use the
-provided `environment.yml` file to create a conda environment with all
-the necessary dependencies: 1. `Download and Install Conda`_ 2. Build
-the `spras` conda environment and activate it:
+provided `pyproject.toml` file to create a `pixi` environment with all
+the necessary dependencies: 1. `Download and Install Pixi`_ 2. Activate
+the pixi environment:
 
 .. code:: bash
 
-   conda env create -f environment.yml
-   conda activate spras
+   pixi shell
 
 *****************************
  Installing SPRAS with `pip`
@@ -49,4 +48,4 @@ image tag name. For example, to get spras v0.6.0:
 
    docker pull reedcompbio/spras:0.6.0
 
-.. _download and install conda: https://conda-forge.org/download/
+.. _download and install pixi: https://pixi.sh/latest/installation/

docs/tutorial/beginner.rst

@@ -29,26 +29,17 @@ Visit the `SPRAS GitHub repository
 ================================
 
 From the root directory of the SPRAS repository, create and activate the
-Conda environment and install the SPRAS python package:
+Pixi environment and install the SPRAS python package:
 
 .. code:: bash
 
-   conda env create -f environment.yml
-   conda activate spras
-   python -m pip install .
+   pixi shell
 
 .. note::
 
-   The first command performs a one-time installation of the SPRAS
-   dependencies by creating a Conda environment (an isolated space that
-   keeps all required packages and versions separate from your system).
-
-   The second command activates the newly created environment so you can
-   use these dependencies when running SPRAS; this step must be done
-   each time you open a new terminal session.
-
-   The last command is a one-time installation of the SPRAS package into
-   the environment.
+   This performs a one-time installation of the SPRAS dependencies by
+   creating a Pixi environment (an isolated space that keeps all
+   required packages and versions separate from your system).
 
 0.3 Test the installation
 =========================

docs/tutorial/introduction.rst

@@ -24,9 +24,8 @@ Together, we will cover:
 
 Required software:
 
--  `Conda
-   <https://docs.conda.io/projects/conda/en/latest/user-guide/install/index.html>`__
-   : for managing environments
+-  `Pixi <https://pixi.sh/latest/installation/>`__ : for managing
+   environments
 
 -  `Docker <https://www.docker.com/get-started/>`__ : for containerized
    runs