4 files changed, 6 insertions, 8 deletions
diff --git a/pkgs/tools/audio/picotts/default.nix b/pkgs/tools/audio/picotts/default.nix
index 5c995f407a7b4..d2ab0e09d3cf1 100644
--- a/pkgs/tools/audio/picotts/default.nix
+++ b/pkgs/tools/audio/picotts/default.nix
@@ -1,6 +1,6 @@
 { lib, stdenv, fetchFromGitHub, autoconf, automake, libtool, popt }:
 
-stdenv.mkDerivation {
+stdenv.mkDerivation rec {
   pname = "picotts";
   version = "unstable-2018-10-19";
 
@@ -12,7 +12,7 @@ stdenv.mkDerivation {
   };
   nativeBuildInputs = [ autoconf automake ];
   buildInputs = [ libtool popt ];
-  sourceRoot = "source/pico";
+  sourceRoot = "${src.name}/pico";
   preConfigure = "./autogen.sh";
   meta = {
     description = "Text to speech voice sinthesizer from SVox";
@@ -22,5 +22,3 @@ stdenv.mkDerivation {
     platforms = lib.platforms.linux;
   };
 }
-
-
diff --git a/pkgs/tools/audio/piper/default.nix b/pkgs/tools/audio/piper/default.nix
index 29fdb0705fec6..ed70eb4848fcc 100644
--- a/pkgs/tools/audio/piper/default.nix
+++ b/pkgs/tools/audio/piper/default.nix
@@ -20,7 +20,7 @@ let
   pname = "piper";
   version = "1.2.0";
 in
-stdenv.mkDerivation {
+stdenv.mkDerivation rec {
   inherit pname version;
 
   src = fetchFromGitHub {
@@ -30,7 +30,7 @@ stdenv.mkDerivation {
     hash = "sha256-6WNWqJt0PO86vnf+3iHaRRg2KwBOEj4aicmB+P2phlk=";
   };
 
-  sourceRoot = "source/src/cpp";
+  sourceRoot = "${src.name}/src/cpp";
 
   nativeBuildInputs = [
     cmake
diff --git a/pkgs/tools/audio/piper/train.nix b/pkgs/tools/audio/piper/train.nix
index a385ebb85ad66..2cab1ba4ba042 100644
--- a/pkgs/tools/audio/piper/train.nix
+++ b/pkgs/tools/audio/piper/train.nix
@@ -15,7 +15,7 @@ python.pkgs.buildPythonPackage {
   pname = "piper-train";
   format = "setuptools";
 
-  sourceRoot = "source/src/python";
+  sourceRoot = "${piper-tts.src.name}/src/python";
 
   nativeBuildInputs = with python.pkgs; [
     cython
diff --git a/pkgs/tools/audio/yabridgectl/default.nix b/pkgs/tools/audio/yabridgectl/default.nix
index c57a5dbd0495c..06bca00fc5b0f 100644
--- a/pkgs/tools/audio/yabridgectl/default.nix
+++ b/pkgs/tools/audio/yabridgectl/default.nix
@@ -10,7 +10,7 @@ rustPlatform.buildRustPackage {
   version = yabridge.version;
 
   src = yabridge.src;
-  sourceRoot = "source/tools/yabridgectl";
+  sourceRoot = "${yabridge.src.name}/tools/yabridgectl";
   cargoLock = {
     lockFile = ./Cargo.lock;
     outputHashes = {