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Prerequisites

Before using the Manetu PolicyEngine, ensure you have the appropriate tools installed for your use case.

Most Users Don't Need Go

If you install mpe via Homebrew or download a pre-built binary, you don't need Go installed. Go is only required if you're building from source or using the embedded Go library.

For All Users​

Open Policy Agent (OPA)​

OPA is required for the mpe lint command to validate Rego syntax.

Installation:

  • macOS: brew install opa
  • Linux/Windows: Download from OPA releases

Verify installation:

opa version
# Version: 0.60.0

For Go Developers​

If you're building mpe from source or using the embedded Go library, you'll also need:

Go​

Go 1.21 or later is required.

Installation:

Verify installation:

go version
# go version go1.21.0 darwin/arm64

Optional Tools​

Make​

Make is useful for running project tasks, but not strictly required.

  • macOS: xcode-select --install
  • Linux: apt-get install make or yum install make

golangci-lint / staticcheck​

For development on the PolicyEngine itself:

go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest
go install honnef.co/go/tools/cmd/staticcheck@latest

Verifying Your Environment​

Run the commands relevant to your setup:

# All users - Check OPA
opa version

# Go developers - Check Go
go version

# Optional - Check Make
make --version