ente-auth: fix build error identifier 'xxx' preceded by whitespace in a literal operator declaration is deprecated

[iedame]

ente-auth is failing on unstable and unstable-small.
This build error was likely introduced by #444862:

Error log:

[        ] In file included from /build/source/mobile/apps/auth/linux/flutter/ephemeral/.plugin_symlinks/flutter_secure_storage_linux/linux/flutter_secure_storage_linux_plugin.cc:2:
[        ] In file included from /build/source/mobile/apps/auth/linux/flutter/ephemeral/.plugin_symlinks/flutter_secure_storage_linux/linux/include/Secret.hpp:2:
[        ] /build/source/mobile/apps/auth/linux/flutter/ephemeral/.plugin_symlinks/flutter_secure_storage_linux/linux/include/json.hpp:24392:35: error: identifier '_json' preceded by whitespace in a literal operator declaration is deprecated [-Werror,-Wdeprecated-literal-operator]
[        ]  24392 | inline nlohmann::json operator "" _json(const char* s, std::size_t n)
[        ]        |                       ~~~~~~~~~~~~^~~~~
[        ]        |                       operator""_json
[        ] /build/source/mobile/apps/auth/linux/flutter/ephemeral/.plugin_symlinks/flutter_secure_storage_linux/linux/include/json.hpp:24400:49: error: identifier '_json_pointer' preceded by whitespace in a literal operator declaration is deprecated [-Werror,-Wdeprecated-literal-operator]
[        ]  24400 | inline nlohmann::json::json_pointer operator "" _json_pointer(const char* s, std::size_t n)
[        ]        |                                     ~~~~~~~~~~~~^~~~~~~~~~~~~
[        ]        |                                     operator""_json_pointer
[        ] /build/source/mobile/apps/auth/linux/flutter/ephemeral/.plugin_symlinks/flutter_secure_storage_linux/linux/include/json.hpp:24464:58: error: identifier '_json' preceded by whitespace in a literal operator declaration is deprecated [-Werror,-Wdeprecated-literal-operator]
[        ]  24464 |     using nlohmann::literals::json_literals::operator "" _json; // NOLINT(misc-unused-using-decls,google-global-names-in-headers)
[        ]        |                                              ~~~~~~~~~~~~^~~~~
[        ]        |                                              operator""_json
[        ] /build/source/mobile/apps/auth/linux/flutter/ephemeral/.plugin_symlinks/flutter_secure_storage_linux/linux/include/json.hpp:24465:58: error: identifier '_json_pointer' preceded by whitespace in a literal operator declaration is deprecated [-Werror,-Wdeprecated-literal-operator]
[        ]  24465 |     using nlohmann::literals::json_literals::operator "" _json_pointer; //NOLINT(misc-unused-using-decls,google-global-names-in-headers)
[        ]        |                                              ~~~~~~~~~~~~^~~~~~~~~~~~~
[        ]        |                                              operator""_json_pointer
[        ] 4 errors generated.

Things done

• Built on platform:
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• Tested, as applicable:
  • NixOS tests in nixos/tests.
  • Package tests at passthru.tests.
  • Tests in lib/tests or pkgs/test for functions and "core" functionality.
• Ran nixpkgs-review on this PR. See nixpkgs-review usage.
• Tested basic functionality of all binary files, usually in ./result/bin/.
• Nixpkgs Release Notes
  • Package update: when the change is major or breaking.
• NixOS Release Notes
  • Module addition: when adding a new NixOS module.
  • Module update: when the change is significant.
• Fits CONTRIBUTING.md, pkgs/README.md, maintainers/README.md and other READMEs.

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[iedame]

@LudovicoPiero Please test this quick fix, it is building fine now for me on unstable x86_64-linux.

[iedame]

nixpkgs-review result

Generated using nixpkgs-review-gha

Command: nixpkgs-review pr 449997
Commit: 784d3012282b356a8da9f99d0056bc291090c139 (subsequent changes)
Merge: 8df2231b58626cf000e518013dcc980f1e089c8a

Logs: https://github.com/iedame/nixpkgs-review-gha/actions/runs/18352457151

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x86_64-linux

✅ 3 packages built:

• ente-auth
• ente-auth.debug
• ente-auth.pubcache

---

aarch64-linux

✅ 3 packages built:

• ente-auth
• ente-auth.debug
• ente-auth.pubcache

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x86_64-darwin

✅ No rebuilds

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aarch64-darwin

✅ No rebuilds

[LudovicoPiero]

Just tested it — builds fine now. Thanks for the quick PR!

[gepbird]

I tested the binary, thanks for the fix!