diff --git a/nix/devShell.nix b/nix/devShell.nix
index 6a973d17a..ed83407fb 100644
--- a/nix/devShell.nix
+++ b/nix/devShell.nix
@@ -53,7 +53,7 @@
     [
       libGL
     ]
-    ++ lib.optionals stdenv.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       bzip2
       expat
       fontconfig
@@ -106,7 +106,7 @@ in
         wabt
         wasmtime
       ]
-      ++ lib.optionals stdenv.isLinux [
+      ++ lib.optionals stdenv.hostPlatform.isLinux [
         # My nix shell environment installs the non-interactive version
         # by default so we have to include this.
         bashInteractive
@@ -148,7 +148,7 @@ in
 
     # On Linux we need to setup the environment so that all GTK data
     # is available (namely icons).
-    shellHook = lib.optionalString stdenv.isLinux ''
+    shellHook = lib.optionalString stdenv.hostPlatform.isLinux ''
       # Minimal subset of env set by wrapGAppsHook4 for icons and global settings
       export XDG_DATA_DIRS=$XDG_DATA_DIRS:${hicolor-icon-theme}/share:${gnome.adwaita-icon-theme}/share
       export XDG_DATA_DIRS=$XDG_DATA_DIRS:$GSETTINGS_SCHEMAS_PATH # from glib setup hook
diff --git a/nix/package.nix b/nix/package.nix
index fccaf1c92..af7587900 100644
--- a/nix/package.nix
+++ b/nix/package.nix
@@ -126,7 +126,7 @@ in
       [
         libGL
       ]
-      ++ lib.optionals stdenv.isLinux [
+      ++ lib.optionals stdenv.hostPlatform.isLinux [
         bzip2
         expat
         fontconfig
@@ -161,7 +161,7 @@ in
 
     postInstall = ''
       terminfo_src=${
-        if stdenv.isDarwin
+        if stdenv.hostPlatform.isDarwin
         then ''"$out/Applications/Ghostty.app/Contents/Resources/terminfo"''
         else "$out/share/terminfo"
       }