From 60e1a2c091c8c4c592632681a9e4c7471f948d74 Mon Sep 17 00:00:00 2001
From: Ali Khan <alik@robarts.ca>
Date: Fri, 23 Oct 2026 21:25:19 -0400
Subject: [PATCH] Build a conda package with pixi-build and publish it on
 release

Same setup as khanlab/zarrnii: the package is published to akhanf/khanlab by
the khanlab pixi publish action when a GitHub release is published, and built
without uploading on PRs that change the packaging.

Run dependencies are listed explicitly rather than converted from
[project.dependencies], to relax the SimpleITK==2.2.1 pin (it conflicts with
packages needing newer SimpleITK) and leave out typing and pytest.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 .github/workflows/push_conda.yml | 53 ++++++++++++++++++++++++++++++++
 .gitignore                       |  5 +++
 pyproject.toml                   | 43 ++++++++++++++++++++++++++
 3 files changed, 101 insertions(+)
 create mode 100644 .github/workflows/push_conda.yml

diff --git a/.github/workflows/push_conda.yml b/.github/workflows/push_conda.yml
new file mode 100644
index 0000000..36dde45
--- /dev/null
+++ b/.github/workflows/push_conda.yml
@@ -0,0 +1,53 @@
+name: Publish Conda package
+
+on:
+  release:
+    types: [published]
+
+  # build the package (without uploading) when the packaging changes
+  pull_request:
+    paths:
+      - pyproject.toml
+      - .github/workflows/push_conda.yml
+
+  workflow_dispatch:
+    inputs:
+      release_tag:
+        description: "Release tag to simulate, e.g. v1.4.0"
+        required: true
+        type: string
+
+      upload:
+        description: "Actually upload package"
+        required: true
+        default: false
+        type: boolean
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout source
+        uses: actions/checkout@v6
+        with:
+          ref: >-
+            ${{ github.event_name == 'release'
+                && github.event.release.tag_name
+                || github.ref }}
+          fetch-depth: 0
+
+      - name: Build and publish
+        uses: khanlab/actions/.github/actions/action-pixi_task-publish@df4211abe672b61c81f4177eef5b9516edf2944e
+        with:
+          release-tag: >-
+            ${{ github.event_name == 'release'
+                && github.event.release.tag_name
+                || github.event_name == 'pull_request'
+                && format('v0.0.0.dev{0}', github.run_number)
+                || inputs.release_tag }}
+          channel: akhanf/khanlab
+          api-key: ${{ secrets.PREFIX_API_KEY }}
+          upload: >-
+            ${{ github.event_name == 'release'
+                || inputs.upload == true }}
diff --git a/.gitignore b/.gitignore
index 7222c5c..8e478ad 100644
--- a/.gitignore
+++ b/.gitignore
@@ -37,3 +37,8 @@ tests/test_results/
 fireants/scripts/template/configs/test*.yaml
 fireants/**/*debug/
 **/.DS_Store
+
+# pixi
+.pixi/
+pixi.lock
+*.conda
diff --git a/pyproject.toml b/pyproject.toml
index 018e299..d55e041 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,3 +27,46 @@ exclude = ["docker*", "notepad*", "fused_ops*", "tutorials*"]
 
 [tool.hatch.build.targets.wheel]
 packages = ["fireants"]
+
+# ----------------------------------------------------------------------
+# Conda package, built with pixi-build and published to akhanf/khanlab on
+# release (.github/workflows/push_conda.yml). The run dependencies are listed
+# here rather than converted from [project.dependencies], to relax the
+# SimpleITK pin and leave out typing (stdlib) and pytest (tests only).
+# ----------------------------------------------------------------------
+
+[tool.pixi.workspace]
+channels = ["conda-forge"]
+platforms = ["linux-64"]
+preview = ["pixi-build"]
+
+[tool.pixi.package]
+name = "fireants"
+# set from the release tag by the publish workflow
+version = "0.0.0.dev0"
+publish = true
+
+[tool.pixi.package.build.backend]
+name = "pixi-build-python"
+version = "*"
+channels = ["conda-forge"]
+
+[tool.pixi.package.build.config]
+ignore-pyproject-manifest = true
+
+[tool.pixi.package.host-dependencies]
+hatchling = ">=1.21.0"
+
+[tool.pixi.package.run-dependencies]
+python = ">=3.9"
+pytorch = ">=2.3.0"
+# the PyPI SimpleITK==2.2.1 pin is not needed, and conflicts with newer packages
+simpleitk = ">=2.2.1"
+nibabel = "*"
+numpy = "*"
+scipy = "*"
+scikit-image = "*"
+matplotlib-base = "*"
+tqdm = "*"
+pandas = "*"
+hydra-core = "*"