diff --git a/home-manager/default.nix b/home-manager/default.nix
index bb098869..2a27ae82 100644
--- a/home-manager/default.nix
+++ b/home-manager/default.nix
@@ -15,9 +15,7 @@ in
 pkgs.stdenv.mkDerivation {
   name = "home-manager";
 
-  phases = [ "installPhase" ];
-
-  installPhase = ''
+  buildCommand = ''
     install -v -D -m755 ${./home-manager} $out/bin/home-manager
 
     substituteInPlace $out/bin/home-manager \
diff --git a/modules/home-environment.nix b/modules/home-environment.nix
index d0f7b6e1..ec736b20 100644
--- a/modules/home-environment.nix
+++ b/modules/home-environment.nix
@@ -410,9 +410,7 @@ in
         home-files = pkgs.stdenv.mkDerivation {
           name = "home-manager-files";
 
-          phases = [ "installPhase" ];
-
-          installPhase =
+          buildCommand =
             "mkdir -p $out\n" +
             concatStringsSep "\n" (
               mapAttrsToList (n: v:
@@ -431,9 +429,7 @@ in
         pkgs.stdenv.mkDerivation {
           name = "home-manager-generation";
 
-          phases = [ "installPhase" ];
-
-          installPhase = ''
+          buildCommand = ''
             install -D ${activationScript} $out/activate
 
             substituteInPlace $out/activate \