Add exec permission to mounted nix store from remote machine

Solves the error
```
[gonne@nodens:~]$ sudo nixos-install --flake 'git+https://gitea.mathebau.de/gonne/nixConfig?ref=updates#ghatanothoa'
building the flake in git+https://gitea.mathebau.de/gonne/nixConfig?ref=updates&rev=711f80c85e185ca9fe32a27492b5295f2ddc7a2f...
error: builder for '/nix/store/0iblfp7h8l97qflgcsv3kpnwvfzvr6bi-builder.pl.drv' failed with exit code 1;
       last 1 log lines:
       > error: executing '/nix/store/9nw8b61s8lfdn8fkabxhbz0s775gjhbr-bash-5.2p37/bin/bash': Permission denied
       For full logs, run 'nix log /nix/store/0iblfp7h8l97qflgcsv3kpnwvfzvr6bi-builder.pl.drv'.
error: builder for '/nix/store/ssy2yzclqcsddsmqw60yd7vwc7843fw3-daniel-authorized_keys.drv' failed with exit code 1;
       last 1 log lines:
       > error: executing '/nix/store/9nw8b61s8lfdn8fkabxhbz0s775gjhbr-bash-5.2p37/bin/bash': Permission denied
       For full logs, run 'nix log /nix/store/ssy2yzclqcsddsmqw60yd7vwc7843fw3-daniel-authorized_keys.drv'.
error: builder for '/nix/store/k4npfvmszrzr49yrm5k4hiz3p2c32jl7-etc-os-release.drv' failed with exit code 1;
       last 1 log lines:
       > error: executing '/nix/store/9nw8b61s8lfdn8fkabxhbz0s775gjhbr-bash-5.2p37/bin/bash': Permission denied
       For full logs, run 'nix log /nix/store/k4npfvmszrzr49yrm5k4hiz3p2c32jl7-etc-os-release.drv'.
error: builder for '/nix/store/s72czr6ba3kf87hahwmg5lvjd9dwnjnz-mounts.sh.drv' failed with exit code 1;
       last 1 log lines:
       > error: executing '/nix/store/9nw8b61s8lfdn8fkabxhbz0s775gjhbr-bash-5.2p37/bin/bash': Permission denied
       For full logs, run 'nix log /nix/store/s72czr6ba3kf87hahwmg5lvjd9dwnjnz-mounts.sh.drv'.
error: 1 dependencies of derivation '/nix/store/mm45kds7svlvi0w3fj33pfbcjbzcx2nl-nixos-system-ghatanothoa-25.05pre-git.drv' failed to build

[gonne@nodens:~]$

```

flake-module.nix

@@ -63,7 +63,7 @@
       overlays = [
         (_: prev: {
           inherit (self'.packages) alias-to-sieve; # add custom package to convert alias files to sieve scripts on the stalwart machine
-          stalwart-mail = assert lib.assertMsg (prev.stalwart-mail.version == "0.11.7") ''
+          stalwart-mail = assert lib.assertMsg (prev.stalwart-mail.version == "0.11.6-unstable-2025-02-04") ''
             1. If the bug https://github.com/stalwartlabs/sieve/issues/11 is resolved to our satisfaction, try to remove this overlay.
             2. Check whether sieve-rs recieved new updates that our patch needs to be rebased upon.
             3. Check whether the sieve-rs patch below that exchanges the dependency needs updates.
@@ -90,7 +90,7 @@
                             ./patches/sieve-rs.patch
                           ];
                           # Replace the string with `lib.fakeHash` after version changes in order to get the new hash value.
-                          cargoHash = "sha256-fP5dyTmuwydPGCgpP6XtVFSHE0HwGfvw5UjwNz0R3ek=";
+                          cargoHash = "sha256-0U0Z13a2vRxMFnaaHeXBjvYDjKStgqmuDboUVssVMQw=";
                         }
                       );
                   };

flake.lock

@@ -698,11 +698,11 @@
     },
     "nixpkgs_6": {
       "locked": {
-        "lastModified": 1744932701,
-        "narHash": "sha256-fusHbZCyv126cyArUwwKrLdCkgVAIaa/fQJYFlCEqiU=",
+        "lastModified": 1743827369,
+        "narHash": "sha256-rpqepOZ8Eo1zg+KJeWoq1HAOgoMCDloqv5r2EAa9TSA=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "b024ced1aac25639f8ca8fdfc2f8c4fbd66c48ef",
+        "rev": "42a1c966be226125b48c384171c44c651c236c22",
         "type": "github"
       },
       "original": {
@@ -849,11 +849,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1744669848,
-        "narHash": "sha256-pXyanHLUzLNd3MX9vsWG+6Z2hTU8niyphWstYEP3/GU=",
+        "lastModified": 1743910657,
+        "narHash": "sha256-zr2jmWeWyhCD8WmO2aWov2g0WPPuZfcJDKzMJZYGq3Y=",
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "61154300d945f0b147b30d24ddcafa159148026a",
+        "rev": "523f58a4faff6c67f5f685bed33a7721e984c304",
         "type": "github"
       },
       "original": {

nixos/machines/nodens/hardware-configuration.nix

@@ -51,6 +51,7 @@
       "subvol=nix"
       "users" # Allows any user to mount and unmount
       "nofail" # Prevent system from failing if this drive doesn't mount
+      "exec" # needed for the nixos-install command
     ];
   };
 

packages/alias-to-sieve/Cargo.lock

@@ -101,9 +101,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.172"
+version = "0.2.171"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d750af042f7ef4f724306de029d18836c26c1765a54a6a3f094cbd23a7267ffa"
+checksum = "c19937216e9d3aa9956d9bb8dfc0b0c8beb6058fc4f7a4dc4d850edf86a237d6"
 
 [[package]]
 name = "log"
@@ -170,9 +170,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.95"
+version = "1.0.94"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02b3e5e68a3a1a02aad3ec490a98007cbc13c37cbe84a3cd7b8e406d76e7f778"
+checksum = "a31971752e70b8b2686d7e46ec17fb38dad4051d94024c88df49b667caea9c84"
 dependencies = [
  "unicode-ident",
 ]

packages/alias-to-sieve/Cargo.toml

@@ -6,5 +6,5 @@ edition = "2021"
 rust-version = "1.68.2"
 
 [dependencies]
-fqdn = {version = "0.4.6", features = ["domain-label-length-limited-to-63", "domain-name-without-special-chars"]}
+fqdn = {version = "0.4.2", features = ["domain-label-length-limited-to-63", "domain-name-without-special-chars"]}
 email-address-parser = "2.0.0"