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

[UlyssesZh]

The build error was introduced by #444862:

Error log

[        ] In file included from /build/source/linux/flutter/ephemeral/.plugin_symlinks/flutter_secure_sto
rage_linux/linux/flutter_secure_storage_linux_plugin.cc:2:
[        ] In file included from /build/source/linux/flutter/ephemeral/.plugin_symlinks/flutter_secure_sto
rage_linux/linux/include/Secret.hpp:2:
[        ] /build/source/linux/flutter/ephemeral/.plugin_symlinks/flutter_secure_storage_linux/linux/inclu
de/json.hpp:24392:35: error: identifier '_json' preceded by whitespace in a literal operator declaration i
s deprecated [-Werror,-Wdeprecated-literal-operator]
[   +1 ms]  24392 | inline nlohmann::json operator "" _json(const char* s, std::size_t n)
[        ]        |                       ~~~~~~~~~~~~^~~~~
[        ]        |                       operator""_json
[        ] /build/source/linux/flutter/ephemeral/.plugin_symlinks/flutter_secure_storage_linux/linux/inclu
de/json.hpp:24400:49: error: identifier '_json_pointer' preceded by whitespace in a literal operator decla
ration 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/linux/flutter/ephemeral/.plugin_symlinks/flutter_secure_storage_linux/linux/inclu
de/json.hpp:24464:58: error: identifier '_json' preceded by whitespace in a literal operator declaration i
s 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/linux/flutter/ephemeral/.plugin_symlinks/flutter_secure_storage_linux/linux/inclu
de/json.hpp:24465:58: error: identifier '_json_pointer' preceded by whitespace in a literal operator decla
ration 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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[Sigmanificient]

nixpkgs-review result

Generated using nixpkgs-review-gha

Command: nixpkgs-review pr 449770
Commit: 3bf045bb2c066b8b3c3c447c6b8faf849001ecf9 (subsequent changes)
Merge: 1ae5272d51f7a2eefe26c91349a61e29ce3cecb3

Logs: https://github.com/Sigmanificient/nixpkgs-review-gha/actions/runs/18341473977

---

x86_64-linux

✅ 3 packages built:

• server-box
• server-box.debug
• server-box.pubcache

---

aarch64-linux

✅ 3 packages built:

• server-box
• server-box.debug
• server-box.pubcache

[iedame]

nixpkgs-review result

Generated using nixpkgs-review-gha

Command: nixpkgs-review pr 449770
Commit: 3bf045bb2c066b8b3c3c447c6b8faf849001ecf9 (subsequent changes)
Merge: b033621998897d90b1d97c2e2fbb77689957c965

Logs: https://github.com/iedame/nixpkgs-review-gha/actions/runs/18352790992

---

x86_64-linux

✅ 3 packages built:

• server-box
• server-box.debug
• server-box.pubcache

---

aarch64-linux

✅ 3 packages built:

• server-box
• server-box.debug
• server-box.pubcache

---

x86_64-darwin

✅ No rebuilds

---

aarch64-darwin

✅ No rebuilds

[SuperSandro2000]

Please patch out Werror here https://github.com/lollipopkit/flutter_server_box/blob/860c11d4a8e9f86e7a6f1a109aa5dac6e5726c1d/linux/CMakeLists.txt#L44 instead