docs, messages: Resolve nixos.org/manual/nix/stable redirect

Loads a bit quicker

doc/manual/source/release-notes/rl-2.8.md

@@ -48,6 +48,6 @@
 
 * `nix run` is now stricter in what it accepts: members of the `apps`
   flake output are now required to be apps (as defined in [the
-  manual](https://nixos.org/manual/nix/stable/command-ref/new-cli/nix3-run.html#apps)),
+  manual](https://nix.dev/manual/nix/stable/command-ref/new-cli/nix3-run.html#apps)),
   and members of `packages` or `legacyPackages` must be derivations
   (not apps).

scripts/install-nix-from-tarball.sh

@@ -40,7 +40,7 @@ fi
 
 # Determine if we could use the multi-user installer or not
 if [ "$(uname -s)" = "Linux" ]; then
-    echo "Note: a multi-user installation is possible. See https://nixos.org/manual/nix/stable/installation/installing-binary.html#multi-user-installation" >&2
+    echo "Note: a multi-user installation is possible. See https://nix.dev/manual/nix/stable/installation/installing-binary.html#multi-user-installation" >&2
 fi
 
 case "$(uname -s)" in
@@ -96,7 +96,7 @@ while [ $# -gt 0 ]; do
                 echo "              providing multi-user support and better isolation for local builds."
                 echo "              Both for security and reproducibility, this method is recommended if"
                 echo "              supported on your platform."
-                echo "              See https://nixos.org/manual/nix/stable/installation/installing-binary.html#multi-user-installation"
+                echo "              See https://nix.dev/manual/nix/stable/installation/installing-binary.html#multi-user-installation"
                 echo ""
                 echo " --no-daemon: Simple, single-user installation that does not require root and is"
                 echo "              trivial to uninstall."
@@ -144,7 +144,7 @@ if ! [ -e "$dest" ]; then
 fi
 
 if ! [ -w "$dest" ]; then
-    echo "$0: directory $dest exists, but is not writable by you. This could indicate that another user has already performed a single-user installation of Nix on this system. If you wish to enable multi-user support see https://nixos.org/manual/nix/stable/installation/multi-user.html. If you wish to continue with a single-user install for $USER please run 'chown -R $USER $dest' as root." >&2
+    echo "$0: directory $dest exists, but is not writable by you. This could indicate that another user has already performed a single-user installation of Nix on this system. If you wish to enable multi-user support see https://nix.dev/manual/nix/stable/installation/multi-user.html. If you wish to continue with a single-user install for $USER please run 'chown -R $USER $dest' as root." >&2
     exit 1
 fi
 

src/libstore-c/nix_api_store.h

@@ -57,14 +57,14 @@ nix_err nix_libstore_init_no_load_config(nix_c_context * context);
  * ignores `NIX_REMOTE` and the `store` option. For this reason, `NULL` is most likely the better choice.
  *
  *   For supported store URLs, see [*Store URL format* in the Nix Reference
- * Manual](https://nixos.org/manual/nix/stable/store/types/#store-url-format).
+ * Manual](https://nix.dev/manual/nix/stable/store/types/#store-url-format).
  * @endparblock
  *
  * @param[in] params @parblock
  *   optional, null-terminated array of key-value pairs, e.g. {{"endpoint",
  * "https://s3.local"}}.
  *
- *   See [*Store Types* in the Nix Reference Manual](https://nixos.org/manual/nix/stable/store/types).
+ *   See [*Store Types* in the Nix Reference Manual](https://nix.dev/manual/nix/stable/store/types).
  * @endparblock
  *
  * @return a Store pointer, NULL in case of errors

src/nix/nix.md

@@ -44,7 +44,7 @@ R""(
 Nix is a tool for building software, configurations and other
 artifacts in a reproducible and declarative way. For more information,
 see the [Nix homepage](https://nixos.org/) or the [Nix
-manual](https://nixos.org/manual/nix/stable/).
+manual](https://nix.dev/manual/nix/stable/).
 
 # Installables