add Shiv-based build for standalone eris executable

- Add 'shiv' to dev dependencies in pyproject.toml
- Add dist/ to .gitignore
- Create packaging/build-shiv script: builds dist/eris zipapp via
  shiv -e eris.__main__:entry_point --compile-pyc --reproducible
- Update uv.lock

.gitignore

@@ -3,3 +3,4 @@ __pycache__/
 *.egg-info/
 commits.txt
 build/
+dist/

packaging/build-shiv

@@ -0,0 +1,26 @@
+#!/bin/bash
+
+
+set -e
+set -x
+
+
+cd "$(dirname "$0")/.."
+mkdir -p dist
+REQS=$(mktemp)
+uv export --no-dev --no-header --no-emit-project --no-hashes > "$REQS"
+uv build --wheel --out-dir dist
+WHEEL=$(ls dist/eris-*.whl 2>/dev/null | head -1)
+if [ -z "$WHEEL" ]; then
+    echo "No wheel found in dist/" >&2
+    exit 1
+fi
+uv run shiv \
+  -e "eris.__main__:entry_point" \
+  -o dist/eris \
+  --compile-pyc \
+  --reproducible \
+  --no-deps \
+  -r "$REQS" \
+  "$WHEEL"
+rm -f "$REQS" "$WHEEL"

pyproject.toml

@@ -33,6 +33,7 @@ homepage = "https://github.com/ahamilton/eris"
 [dependency-groups]
 dev = [
     "pytest>=9.1.1",
+    "shiv>=1.0.8",
 ]
 
 [tool.pytest.ini_options]

uv.lock

@@ -2,6 +2,18 @@ version = 1
 revision = 3
 requires-python = ">=3.14"
 
+[[package]]
+name = "click"
+version = "8.4.2"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "colorama", marker = "sys_platform == 'win32'" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/76/d4/81420972a676e8ffea40450d8c8c92943e7218a78fe9b64359836cc9876b/click-8.4.2.tar.gz", hash = "sha256:9a6cea6e60b17ebe0a44c5cc636d94f09bd66142c1cd7d8b4cd731c4917a15f6", size = 338000, upload-time = "2026-06-24T17:45:15.148Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/fb/e2/79c688af8b210d232694e31e59da9f6ec747bae31c3f5946e4e9b98860d5/click-8.4.2-py3-none-any.whl", hash = "sha256:e6f9f66136c816745b9d65817da91d61d957fb16e02e4dcd0552553c5a197b76", size = 119243, upload-time = "2026-06-24T17:45:13.73Z" },
+]
+
 [[package]]
 name = "colorama"
 version = "0.4.6"
@@ -43,6 +55,7 @@ dependencies = [
 [package.dev-dependencies]
 dev = [
     { name = "pytest" },
+    { name = "shiv" },
 ]
 
 [package.metadata]
@@ -57,7 +70,10 @@ requires-dist = [
 ]
 
 [package.metadata.requires-dev]
-dev = [{ name = "pytest", specifier = ">=9.1.1" }]
+dev = [
+    { name = "pytest", specifier = ">=9.1.1" },
+    { name = "shiv", specifier = ">=1.0.8" },
+]
 
 [[package]]
 name = "fill3"
@@ -156,6 +172,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/3d/68/1f3066acedf37673694a7141381d8f811ae97f30d34413d236abe7d489f1/pillow-12.3.0-cp315-cp315t-win_arm64.whl", hash = "sha256:06ff022112bc9cbf83b60f8e028d94ad87b60621706487e65f673de61610ab59", size = 2567491, upload-time = "2026-07-01T11:56:23.506Z" },
 ]
 
+[[package]]
+name = "pip"
+version = "26.2"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/db/96/e6f8e9d9d7b9cc4457092712a7e919c3186aa2c2fa9ffed2c5d29cc947e8/pip-26.2.tar.gz", hash = "sha256:2d8542afcc84cdd8e846c2b36b2861fad1da376dd98f8e7113e9108a3c331690", size = 1848845, upload-time = "2026-07-29T21:57:56.407Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/62/36/a3aed958d60531cb442b7ab4596cda7b3621cfb916f8ae1d6769795c7dc1/pip-26.2-py3-none-any.whl", hash = "sha256:931c303696af6fa3417112103b1cad26890e5a07eccb5b99783700e33f2b8aad", size = 1816475, upload-time = "2026-07-29T21:57:54.763Z" },
+]
+
 [[package]]
 name = "pluggy"
 version = "1.6.0"
@@ -205,6 +230,29 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/24/25/1de2678b631f5a49215c6c96fff41ba892b0a34df68d6d80292b1b48aa7f/pytest-9.1.1-py3-none-any.whl", hash = "sha256:37a86b45efb9a47a61a36449063e8e18d0cab3161329fc099eb21783169c4f0c", size = 386536, upload-time = "2026-06-19T10:58:31.347Z" },
 ]
 
+[[package]]
+name = "setuptools"
+version = "83.0.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/34/26/f5d29e25ffdb535afef2d35cdb55b325298f96debd670da4c325e08d70f4/setuptools-83.0.0.tar.gz", hash = "sha256:025bccbbf0fa05b6192bc64ae1e7b16e001fd6d6d4d5de03c97b1c1ade523bef", size = 1154254, upload-time = "2026-07-04T15:31:22.699Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/5d/40/e1e72872c6354b306daef1703549e8e83b4d43cfea356311bf722a043752/setuptools-83.0.0-py3-none-any.whl", hash = "sha256:29b23c360f22f414dc7336bb39178cc7bcbf6021ed2733cde173f09dba19abb3", size = 1008090, upload-time = "2026-07-04T15:31:20.885Z" },
+]
+
+[[package]]
+name = "shiv"
+version = "1.0.8"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "click" },
+    { name = "pip" },
+    { name = "setuptools" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/06/85/004e7123b4821c64be6d9bfed27f63147b4dde929a1cd848f137befeada4/shiv-1.0.8.tar.gz", hash = "sha256:2a68d69e98ce81cb5b8fdafbfc1e27efa93e6d89ca14bfae33482e4176f561d6", size = 32806, upload-time = "2024-11-01T19:47:46.189Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/e7/ec/afbb46f7c1ab071a50d92424daf149420ca1f0e02dc51239485747151d6c/shiv-1.0.8-py2.py3-none-any.whl", hash = "sha256:a60e4b05a2d2f8b820d567b1d89ee59af731759771c32c282d03c4ceae6aba24", size = 20516, upload-time = "2024-11-01T19:47:45.061Z" },
+]
+
 [[package]]
 name = "termstr"
 version = "2026.7.27"