build(deps) update nix

- update nix flake
- bump hard coded reference to rustfmt nightly version
- fix warning that latest version of rustfmt produced

3 files changed, 11 insertions, 12 deletions

diff --git a/flake.lock b/flake.lock
index 29425ed..6bec3de 100644
--- a/flake.lock
+++ b/flake.lock
@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1692799911,
-        "narHash": "sha256-3eihraek4qL744EvQXsK1Ha6C3CR7nnT8X2qWap4RNk=",
+        "lastModified": 1701680307,
+        "narHash": "sha256-kAuep2h5ajznlPMD9rnQyffWG8EM/C73lejGofXvdM8=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "f9e7cf818399d17d347f847525c5a5a8032e4e44",
+        "rev": "4022d587cbbfd70fe950c1e2083a02621806a725",
         "type": "github"
       },
       "original": {
@@ -38,11 +38,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1694183432,
-        "narHash": "sha256-YyPGNapgZNNj51ylQMw9lAgvxtM2ai1HZVUu3GS8Fng=",
+        "lastModified": 1701436327,
+        "narHash": "sha256-tRHbnoNI8SIM5O5xuxOmtSLnswEByzmnQcGGyNRjxsE=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "db9208ab987cdeeedf78ad9b4cf3c55f5ebd269b",
+        "rev": "91050ea1e57e50388fa87a3302ba12d188ef723a",
         "type": "github"
       },
       "original": {
@@ -81,11 +81,11 @@
         "nixpkgs": "nixpkgs_2"
       },
       "locked": {
-        "lastModified": 1694398298,
-        "narHash": "sha256-Hi904+2V5DJhFdEy9DcARSRrGJOlYSILHUC6CgTtuZU=",
+        "lastModified": 1701829002,
+        "narHash": "sha256-zUQTSNujRESm2s0SvL4EXx1l5BqX7VNDAaFWGnaylUY=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "6c520f2e31f4bebeb29cc4563543de7187013575",
+        "rev": "1fdfc1689218998460983986501bd65ba5bbee0f",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index d527e36..26fda20 100644
--- a/flake.nix
+++ b/flake.nix
@@ -22,7 +22,7 @@
             # ideally this wouldn't be pinned to a specific nightly version but
             # selectLatestNightlyWith isn't support with mixed toolchains
             # https://github.com/oxalica/rust-overlay/issues/136
-            (lib.hiPrio rust-bin.nightly."2023-09-01".rustfmt)
+            (lib.hiPrio rust-bin.nightly."2023-12-01".rustfmt)
             # (rust-bin.stable.latest.override { extensions = [ "rust-analyzer" ]; })
             rust-bin.stable.latest.default
           ];
diff --git a/src/key_handling/users.rs b/src/key_handling/users.rs
index 75a0a00..42104f7 100644
--- a/src/key_handling/users.rs
+++ b/src/key_handling/users.rs
@@ -103,8 +103,7 @@ impl UserManagement for UserManager {
         encrypted_secret_key: Option<String>,
         overwrite: bool,
     ) -> Result<()> {
-        let user_ref =
-            config::UserRef::new(public_key, encrypted_secret_key.unwrap_or(String::new()));
+        let user_ref = config::UserRef::new(public_key, encrypted_secret_key.unwrap_or_default());
 
         let mut cfg = self.config_manager.load().context("failed to load application config to find and remove any old versions of the user's encrypted key")?;
         // don't overwrite unless specified