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Running OpenCode with Gemma 4 26B on macOS (via llama.cpp)

As of April 2026, Gemma 4 tool calling is broken in Ollama v0.20.0 (ollama/ollama#15241) - the tool call parser fails and streaming drops tool calls entirely. OpenCode also has issues with local OpenAI-compatible providers (anomalyco/opencode#20669, #20719).

This guide documents a working setup using:

• llama.cpp (built from source with PR #21326 template fix + PR #21343 tokenizer fix) instead of Ollama
• OpenCode built from source with PR #16531 tool-call compatibility layer

Tested on macOS Apple Silicon (M1 Max, 32GB) on April 2, 2026.

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Intro

Let's investigate the Bad Contract deployed on the Neutron as seen here: https://neutron.celat.one/neutron-1/contracts/neutron1y6s52fuhnqtank3wjfgrkcvcp3t3anw6yj72jtk5alufy6ldwrxsa9nzkj code id: 559

Install Neutrod to query the chain

git clone https://github.com/neutron-org/neutron
cd neutron && git checkout v2.0.0
make install

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Document has moved here: https://hackmd.io/F7DKSdRYSlGlrEM2aX4ckQ

Concentrated Liquidity

Index

• Concentrated Liquidity

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TWAP (Time Weighted Average Price)

Serving TWAPs for every AMM pool.

A time weighted average price is a function that takes a sequence of (time, price) pairs and returns a price representing an 'average' over the entire time period. Currently, only the arithmetic mean method is implemented.

Example to query TWAP via the LCD API

URL: https://lcd-osmosis.blockapsis.com/osmosis/twap/v1beta1/ArithmeticTwap

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{"pools":[{"@type":"/osmosis.gamm.v1beta1.Pool","address":"osmo1mw0ac6rwlp5r8wapwk3zs6g29h8fcscxqakdzw9emkne6c8wjp9q0t3v8t","id":"1","pool_params":{"swap_fee":"0.002000000000000000","exit_fee":"0.000000000000000000","smooth_weight_change_params":null},"future_pool_governor":"24h","total_shares":{"denom":"gamm/pool/1","amount":"276337765129834441908053295"},"pool_assets":[{"token":{"denom":"ibc/27394FB092D2ECCD56123C74F36E4C1F926001CEADA9CA97EA622B25F41E5EB2","amount":"3403611909429"},"weight":"536870912000000"},{"token":{"denom":"uosmo","amount":"31441747711316"},"weight":"536870912000000"}],"total_weight":"1073741824000000"},{"@type":"/osmosis.gamm.v1beta1.Pool","address":"osmo1500hy75krs9e8t50aav6fahk8sxhajn9ctp40qwvvn8tcprkk6wszun4a5","id":"2","pool_params":{"swap_fee":"0.005000000000000000","exit_fee":"0.000000000000000000","smooth_weight_change_params":null},"future_pool_governor":"24h","total_shares":{"denom":"gamm/pool/2","amount":"431625679217796465901905449"},"pool_assets":[{"token":{"denom":"uion","

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machine:
  timezone:
    Europe/Paris

  php:
    version: 7.0.3

  environment:
    ENVIRONMENT: testing
    DB_URL: 127.0.0.1

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machine:
  timezone:
    Europe/Paris

  php:
    version: 7.0.3

  environment:
    ENVIRONMENT: testing
    DB_URL: 127.0.0.1

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[{"name":"Bears","color":"Blue","position":{"x":320,"y":138},"modelclass":"Bear","increment":false,"timestamp":false,"softdelete":false,"column":[{"colid":"c217","name":"id","type":"increments","length":"0","order":0,"defaultvalue":"","enumvalue":""},{"colid":"c218","name":"name","type":"string","length":"200","order":1,"defaultvalue":"","enumvalue":""},{"colid":"c219","name":"danger_level","type":"string","length":"200","order":2,"defaultvalue":"","enumvalue":""}],"relation":[{"extramethods":"","foreignkeys":"","name":"fish","relatedmodel":"Fish","relationtype":"hasOne","usenamespace":""},{"extramethods":"","foreignkeys":"","name":"trees","relatedmodel":"Trees","relationtype":"hasMany","usenamespace":""},{"extramethods":"","foreignkeys":"bear_id, picnic_id","name":"picnics","relatedmodel":"Picnics","relationtype":"belongsToMany","usenamespace":""}],"seeding":[]},{"name":"Fish","color":"Yellow","position":{"x":1063,"y":14},"modelclass":"Fish","increment":false,"timestamp":false,"softdelete":false,"column":[{"