52 lines
1.1 KiB
Markdown
52 lines
1.1 KiB
Markdown
# Pantograph
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An interaction system for Lean 4.
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## Installation
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Install `elan` and `lean4`. Then, execute
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``` sh
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lake build
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```
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In order to use `mathlib`, its binary must also be built
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``` sh
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lake build Qq
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lake build aesop
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lake build std
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lake build mathlib
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```
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## Usage
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The binary must be run inside a `lake env` environment. i.e. `lake env
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build/bin/pantograph`. The REPL loop accepts commands and outputs either an
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`Error:` (indicating malformed command) or a json return value indicating the
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result of a command execution. The command can be passed in one of two formats
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```
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command { ... }
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{ "cmd": command, "payload": ... }
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```
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The list of available commands can be found in `Pantograph/Commands.lean`
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Example: (~5k symbols)
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```
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$ lake env build/bin/Pantograph
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create {"imports": ["Init"]}
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catalog {"id": 0}
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```
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Example with `mathlib` (~90k symbols)
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```
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$ lake env build/bin/Pantograph
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create {"imports": ["Mathlib.Analysis.Seminorm"]}
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catalog {"id": 0}
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```
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## Troubleshooting
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If lean encounters stack overflow problems when printing catalog, execute this before running lean:
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```sh
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ulimit -s unlimited
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```
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