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Simplon

Simplon is a delivery orchestrator for any software component that wants to follow a CI/CD flow. It gives you a framework for the tasks that make up that flow -- build, test, release, deploy, monitor -- and a way to bring in additional tasks of your own.

A component declares its commands in one manifest. Simplon assembles the CLI from it, runs the steps, and knows nothing about the component itself. The *ctl product family (netctl, infractl) is where it grew up and is its first user -- an example of who uses it, not a limit on who can.

Using it

pip install simplon

The runtime dependencies are ranges, not exact pins: a product's own requirements.txt is where exact versions belong, and a published package's pins become its consumers' pins.

One extra: pip install simplon[typecheck] adds mypy, which the test:typecheck-python gate runs. A product that does not declare that command does not need it.

Starting a product

The very first launcher has a chicken-and-egg: a fresh product has no venv, so it has no Simplon to write its launcher with. Break it once by hand:

pipx run simplon init myctl --dir .

or pip install simplon into any venv and run simplon init myctl --dir . in the product repo. Without --dir the skeleton lands in a new ./myctl/ subdirectory instead of at the repo root, so pass --dir . whenever the repo is already the product. After that the generated myctl.sh carries itself, and a later simplon init refreshes it.

Layout

src/simplon/ is the kernel: the import package, the thing that gets published. orchestrator/ is Simplon's own product surface -- its manifest, its commands -- because Simplon is a product of itself and builds and tests itself with itself. The two layouts differ on purpose: the kernel uses the conventional src-layout, while orchestrator/ has exactly the shape simplon init writes into every product. If that shape is awkward, Simplon feels it first.

Developing Simplon

Simplon builds and tests itself with itself:

pip install -e .
./simplon.sh test all
./simplon.sh build wheel

Releasing

Tag vX.Y.Z. The release workflow runs the tests, builds the wheel and publishes to PyPI via Trusted Publishing. Releases are cut from tags only, so every version points at a named commit.

Release files for simplon 0.1.5

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Built distribution (wheel)

Table of built distributions (wheels) for simplon 0.1.5
File Interpreter ABI Platform
simplon-0.1.5-py3-none-any.whl Python 3 none any Details

Release files / simplon-0.1.5-py3-none-any.whl

Download URL simplon-0.1.5-py3-none-any.whl
Size 248.2 kB
Tags Python 3
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118215d280606bad4fb3eeed939eedb70801904cdeabbaa74a0af1d1b7b31197
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6459d5d66e0e21b3241ebca0bb71b31aecaf1fab21e7f8f2fb24931ba420220e
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Uploaded via twine/7.0.0 CPython/3.13.14

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Signed by GitHub Actions, verified by PyPI on Sep 4, 2026.

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0.19.0

1 release file

0.18.0

1 release file

0.17.0

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0.16.0

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0.15.0

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0.14.0

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0.13.0

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0.12.0

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0.11.0

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0.10.0

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0.9.0

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0.8.0

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0.7.1

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0.5.0

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0.1.12

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0.1.10

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0.1.6

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This release

0.1.5 This release

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0.1.4

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0.1.3

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0.1.2

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0.1.1

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0.1.0

1 release file

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