synopsis: Add `nix hash convert` prs: #9452 description: { New [`nix hash convert`](https://github.com/NixOS/nix/issues/8876) sub command with a fast track to stabilization! Examples: - Convert the hash to `nix32`. ```bash $ nix hash convert --algo "sha1" --to nix32 "800d59cfcd3c05e900cb4e214be48f6b886a08df" vw46m23bizj4n8afrc0fj19wrp7mj3c0 ``` `nix32` is a base32 encoding with a nix-specific character set. Explicitly specify the hashing algorithm (optional with SRI hashes) but detect hash format by the length of the input hash. - Convert the hash to the `sri` format that includes an algorithm specification: ```bash nix hash convert --algo "sha1" "800d59cfcd3c05e900cb4e214be48f6b886a08df" sha1-gA1Zz808BekAy04hS+SPa4hqCN8= ``` or with an explicit `-to` format: ```bash nix hash convert --algo "sha1" --to sri "800d59cfcd3c05e900cb4e214be48f6b886a08df" sha1-gA1Zz808BekAy04hS+SPa4hqCN8= ``` - Assert the input format of the hash: ```bash nix hash convert --algo "sha256" --from nix32 "ungWv48Bz+pBQUDeXa4iI7ADYaOWF3qctBD/YfIAFa0=" error: input hash 'ungWv48Bz+pBQUDeXa4iI7ADYaOWF3qctBD/YfIAFa0=' does not have the expected format '--from nix32' nix hash convert --algo "sha256" --from nix32 "1b8m03r63zqhnjf7l5wnldhh7c134ap5vpj0850ymkq1iyzicy5s" sha256-ungWv48Bz+pBQUDeXa4iI7ADYaOWF3qctBD/YfIAFa0= ``` The `--to`/`--from`/`--algo` parameters have context-sensitive auto-completion. ## Related Deprecations The following commands are still available but will emit a deprecation warning. Please convert your code to `nix hash convert`: - `nix hash to-base16 $hash1 $hash2`: Use `nix hash convert --to base16 $hash1 $hash2` instead. - `nix hash to-base32 $hash1 $hash2`: Use `nix hash convert --to nix32 $hash1 $hash2` instead. - `nix hash to-base64 $hash1 $hash2`: Use `nix hash convert --to base64 $hash1 $hash2` instead. - `nix hash to-sri $hash1 $hash2`: : Use `nix hash convert --to sri $hash1 $hash2` or even just `nix hash convert $hash1 $hash2` instead. }