iam-policy-json-to-terraform を Homebrew, Nix でインストール

プロジェクトリンク

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コマンドとエイリアス

• iam-policy-json-to-terraform

プロジェクトの歴史

The GitHub repository was created on April 28, 2018, and the changelog records version 1.0.0 on the same date as the initial release. That release read IAM policy JSON from standard input and wrote Terraform HCL to standard output, with support for core IAM policy properties such as Sid, Effect, Action, Resource, and Condition.

The project expanded through small, targeted releases: version 1.1.0 added Condition support with multiple values and a -name flag, version 1.2.0 added wildcard-principal support, version 1.6.0 improved conversion of heredoc-style policy input containing HCL expressions, and version 1.9.0 stopped generating empty sid entries when missing from input JSON.

採用の歴史

The README and project site present both a web version and a command-line version, which helped the tool serve quick one-off conversions as well as automation. GitHub repository metadata showed hundreds of stars by 2026, and the Homebrew formula packaged it as a CLI with macOS and Linux bottles.

Its adoption niche is Terraform users working with AWS IAM policies, especially when policy JSON comes from AWS examples or preexisting infrastructure and needs to become an aws_iam_policy_document block rather than a raw JSON blob.

使われ方

The README shows piping raw JSON into iam-policy-json-to-terraform or redirecting a policy file through standard input. The output is Terraform HCL for an aws_iam_policy_document data source.

The tool is deliberately narrow: it converts one policy representation into another. It does not manage AWS resources or run Terraform, which keeps it useful in scripts, editor workflows, and migration chores.

パッケージ好きにとっての重要性

Package nerds care about this package as an example of a tiny IaC workflow tool that became useful enough for Homebrew and Nix packaging. Its value comes from removing a repetitive translation step rather than from being a platform.

タイムライン

• 2018: Repository created and 1.0.0 released with stdin JSON to stdout HCL conversion.
• 2018: 1.1.0 added multi-value Condition handling and a generated-policy name flag.
• 2019: 1.2.0 added wildcard-principal support.
• 2020: 1.6.0 improved conversion of heredoc input containing HCL expressions.
• 2025: 1.9.0 changed missing Sid handling; 1.9.2 added a Linux ARM64 build target.

Related projects

• The tool is directly related to Terraform, the AWS provider's aws_iam_policy_document data source, and AWS IAM JSON policy documents.
• Adjacent tools include Terraform import and broader infrastructure converters, but this project intentionally focuses on IAM policy document conversion.

ソース

• https://flosell.github.io/iam-policy-json-to-terraform/
• https://formulae.brew.sh/formula/iam-policy-json-to-terraform
• https://github.com/flosell/iam-policy-json-to-terraform
• https://github.com/flosell/iam-policy-json-to-terraform/blob/master/CHANGELOG.md
• https://github.com/flosell/iam-policy-json-to-terraform/releases