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sops-nix/modules/sops/manifest-for.nix

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{ writeTextFile, cfg }:
Do not render templates when decrypting `neededForUsers` secrets This fixes https://github.com/Mic92/sops-nix/issues/659 In https://github.com/Mic92/sops-nix/pull/649, we started rendering templates twice: 1. When rendering `neededForUsers` secrets (if there are any `neededForUsers` secrets). 2. When decrypting "regular" secrets. This alone was weird and wrong, but didn't cause issues for people until https://github.com/Mic92/sops-nix/pull/655, which triggered https://github.com/Mic92/sops-nix/issues/659. The cause is not super obvious: 1. When rendering `neededForUsers` secrets, we'd generate templates in `/run/secrets-for-users/rendered`. 2. However, the `path` for these templates is in `/run/secrets/rendered`, which is not inside of the `/run/secrets-for-users` directory we're dealing with, so we'd generate a symlink from `/run/secrets/rendered/<foo>` to `/run/secrets-for-users/rendered/<foo>`, which required making the parent directory of the symlink (`/run/secrets/rendered/`). 3. This breaks sops-nix's assumption that `/run/secrets` either doesn't exist, or is a symlink, and you get the symptoms described in <https://github.com/Mic92/sops-nix/issues/659>. Reproducing this in a test was straightforward: just expand our existing template test to also have a `neededForUsers` secret. Fixing this was also straightforward: don't render templates during the `neededForUsers` phase (if we want to add support for `neededForUsers` templates in the future, that would be straightforward to do, but I opted not do that here).
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suffix: secrets: templates: extraJson:
writeTextFile {
name = "manifest${suffix}.json";
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text = builtins.toJSON (
{
secrets = builtins.attrValues secrets;
templates = builtins.attrValues templates;
# Does this need to be configurable?
secretsMountPoint = "/run/secrets.d";
symlinkPath = "/run/secrets";
keepGenerations = cfg.keepGenerations;
gnupgHome = cfg.gnupg.home;
sshKeyPaths = cfg.gnupg.sshKeyPaths;
ageKeyFile = cfg.age.keyFile;
ageSshKeyPaths = cfg.age.sshKeyPaths;
useTmpfs = cfg.useTmpfs;
placeholderBySecretName = cfg.placeholder;
userMode = false;
logging = {
keyImport = builtins.elem "keyImport" cfg.log;
secretChanges = builtins.elem "secretChanges" cfg.log;
};
}
// extraJson
);
checkPhase = ''
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${cfg.validationPackage}/bin/sops-install-secrets -check-mode=${
if cfg.validateSopsFiles then "sopsfile" else "manifest"
} "$out"
'';
}