diff --git a/pkgs/applications/audio/sony-headphones-client/default.nix b/pkgs/applications/audio/sony-headphones-client/default.nix
index 03fc6299d5c0..86746cbc5375 100644
--- a/pkgs/applications/audio/sony-headphones-client/default.nix
+++ b/pkgs/applications/audio/sony-headphones-client/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake pkg-config copyDesktopItems ];
   buildInputs = [ bluez dbus glew glfw imgui ];
 
-  sourceRoot = "./${src.name}/Client";
+  sourceRoot = "${src.name}/Client";
 
   cmakeFlags = [ "-Wno-dev" ];
 
diff --git a/pkgs/applications/editors/howl/default.nix b/pkgs/applications/editors/howl/default.nix
index ff9a30074120..030c6666e11d 100644
--- a/pkgs/applications/editors/howl/default.nix
+++ b/pkgs/applications/editors/howl/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
     sha256 = "1qc58l3rkr37cj6vhf8c7bnwbz93nscyraz7jxqwjq6k4gj0cjw3";
   };
 
-  sourceRoot = "./howl-${version}/src";
+  sourceRoot = "howl-${version}/src";
 
   # The Makefile uses "/usr/local" if not explicitly overridden
   installFlags = [ "PREFIX=$(out)" ];
diff --git a/pkgs/applications/misc/mediainfo-gui/default.nix b/pkgs/applications/misc/mediainfo-gui/default.nix
index 4aebb67ac981..ace96a931de0 100644
--- a/pkgs/applications/misc/mediainfo-gui/default.nix
+++ b/pkgs/applications/misc/mediainfo-gui/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ libmediainfo wxGTK32 desktop-file-utils libSM imagemagick ]
     ++ lib.optionals stdenv.isDarwin [ Cocoa ];
 
-  sourceRoot = "./MediaInfo/Project/GNU/GUI/";
+  sourceRoot = "MediaInfo/Project/GNU/GUI";
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/applications/misc/mediainfo/default.nix b/pkgs/applications/misc/mediainfo/default.nix
index ffa7f68378db..06669089a18d 100644
--- a/pkgs/applications/misc/mediainfo/default.nix
+++ b/pkgs/applications/misc/mediainfo/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook pkg-config ];
   buildInputs = [ libzen libmediainfo zlib ];
 
-  sourceRoot = "./MediaInfo/Project/GNU/CLI/";
+  sourceRoot = "MediaInfo/Project/GNU/CLI";
 
   configureFlags = [ "--with-libmediainfo=${libmediainfo}" ];
 
diff --git a/pkgs/applications/science/biology/sratoolkit/default.nix b/pkgs/applications/science/biology/sratoolkit/default.nix
index 8a1bb5376eaf..a36157ed5d16 100644
--- a/pkgs/applications/science/biology/sratoolkit/default.nix
+++ b/pkgs/applications/science/biology/sratoolkit/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
     stdenv.cc.cc.lib
   ];
 
-  sourceRoot = "./sratoolkit.${version}-ubuntu64/bin";
+  sourceRoot = "sratoolkit.${version}-ubuntu64/bin";
 
   installPhase = ''
     find -L . -executable -type f -! -name "*remote-fuser*" -exec install -m755 -D {} $out/bin/{} \;
diff --git a/pkgs/applications/science/electronics/xyce/default.nix b/pkgs/applications/science/electronics/xyce/default.nix
index 4709065e45bd..aee1d25a04cc 100644
--- a/pkgs/applications/science/electronics/xyce/default.nix
+++ b/pkgs/applications/science/electronics/xyce/default.nix
@@ -56,7 +56,7 @@ stdenv.mkDerivation rec {
 
   srcs = [ xyce_src regression_src ];
 
-  sourceRoot = "./${xyce_src.name}";
+  sourceRoot = xyce_src.name;
 
   preConfigure = "./bootstrap";
 
diff --git a/pkgs/applications/science/logic/ekrhyper/default.nix b/pkgs/applications/science/logic/ekrhyper/default.nix
index 187cbc9a92ae..4a5124b23582 100644
--- a/pkgs/applications/science/logic/ekrhyper/default.nix
+++ b/pkgs/applications/science/logic/ekrhyper/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   strictDeps = true;
   nativeBuildInputs = [ ocaml perl ];
-  setSourceRoot = "export sourceRoot=$(echo */ekrh/src/)";
+  setSourceRoot = "export sourceRoot=$(echo */ekrh/src)";
   preInstall = "export INSTALLDIR=$out";
   postInstall = ''for i in "$out/casc"/*; do ln -s "$i" "$out/bin/ekrh-casc-$(basename $i)"; done '';
 
diff --git a/pkgs/applications/science/misc/golly/default.nix b/pkgs/applications/science/misc/golly/default.nix
index 7d91c76579f9..8814b33c4b14 100644
--- a/pkgs/applications/science/misc/golly/default.nix
+++ b/pkgs/applications/science/misc/golly/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
   ];
 
   setSourceRoot = ''
-    sourceRoot=$(echo */gui-wx/)
+    sourceRoot=$(echo */gui-wx)
   '';
 
   postPatch = ''
diff --git a/pkgs/data/fonts/roboto-mono/default.nix b/pkgs/data/fonts/roboto-mono/default.nix
index fd3372123c60..5d7cc57a4b43 100644
--- a/pkgs/data/fonts/roboto-mono/default.nix
+++ b/pkgs/data/fonts/roboto-mono/default.nix
@@ -51,7 +51,7 @@ stdenv.mkDerivation {
     })
   ];
 
-  sourceRoot = "./";
+  sourceRoot = ".";
 
   unpackCmd = ''
     ttfName=$(basename $(stripHash $curSrc))
diff --git a/pkgs/data/fonts/rubik/default.nix b/pkgs/data/fonts/rubik/default.nix
index dec500c119f1..c9e20fa6351a 100644
--- a/pkgs/data/fonts/rubik/default.nix
+++ b/pkgs/data/fonts/rubik/default.nix
@@ -66,7 +66,7 @@ stdenv.mkDerivation {
     })
   ];
 
-  sourceRoot = "./";
+  sourceRoot = ".";
 
   unpackCmd = ''
     ttfName=$(basename $(stripHash $curSrc))
diff --git a/pkgs/development/libraries/dab_lib/default.nix b/pkgs/development/libraries/dab_lib/default.nix
index 0d236c36aa3c..82d591abc139 100644
--- a/pkgs/development/libraries/dab_lib/default.nix
+++ b/pkgs/development/libraries/dab_lib/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-KSkOg0a5iq+13kClQqj+TaEP/PsLUrm8bMmiJEAZ+C4=";
   };
 
-  sourceRoot = "${finalAttrs.src.name}/library/";
+  sourceRoot = "${finalAttrs.src.name}/library";
 
   nativeBuildInputs = [ cmake pkg-config ];
   buildInputs = [ faad2 fftwFloat zlib ];
diff --git a/pkgs/development/libraries/libzen/default.nix b/pkgs/development/libraries/libzen/default.nix
index 12ac860320c7..ecc3736d1fbb 100644
--- a/pkgs/development/libraries/libzen/default.nix
+++ b/pkgs/development/libraries/libzen/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook ];
   configureFlags = [ "--enable-shared" ];
 
-  sourceRoot = "./ZenLib/Project/GNU/Library/";
+  sourceRoot = "ZenLib/Project/GNU/Library";
 
   preConfigure = "sh autogen.sh";
 
diff --git a/pkgs/development/libraries/liquidfun/default.nix b/pkgs/development/libraries/liquidfun/default.nix
index d3e3187bf757..6ab138016d19 100644
--- a/pkgs/development/libraries/liquidfun/default.nix
+++ b/pkgs/development/libraries/liquidfun/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake ];
   buildInputs = [ libGLU libGL libX11 libXi ];
 
-  sourceRoot = "liquidfun/Box2D/";
+  sourceRoot = "liquidfun/Box2D";
 
   preConfigurePhases = "preConfigure";
 
diff --git a/pkgs/os-specific/linux/firmware/xow_dongle-firmware/default.nix b/pkgs/os-specific/linux/firmware/xow_dongle-firmware/default.nix
index 824615a4baf2..444585189434 100644
--- a/pkgs/os-specific/linux/firmware/xow_dongle-firmware/default.nix
+++ b/pkgs/os-specific/linux/firmware/xow_dongle-firmware/default.nix
@@ -14,7 +14,7 @@ stdenvNoCC.mkDerivation rec {
 
   nativeBuildInputs = [ cabextract ];
 
-  sourceRoot = "./.";
+  sourceRoot = ".";
 
   unpackCmd = ''
     cabextract -F FW_ACC_00U.bin ${src}
diff --git a/pkgs/servers/matrix-synapse/plugins/mjolnir-antispam.nix b/pkgs/servers/matrix-synapse/plugins/mjolnir-antispam.nix
index 2d0fa4115cc5..2fa5656310af 100644
--- a/pkgs/servers/matrix-synapse/plugins/mjolnir-antispam.nix
+++ b/pkgs/servers/matrix-synapse/plugins/mjolnir-antispam.nix
@@ -11,7 +11,7 @@ buildPythonPackage rec {
     sha256 = "sha256-/vnojWLpu/fktqPUhAdL1QTESxDwFrBVYAkyF79Fj9w=";
   };
 
-  sourceRoot = "./${src.name}/synapse_antispam";
+  sourceRoot = "${src.name}/synapse_antispam";
 
   buildInputs = [ matrix-synapse ];
 
diff --git a/pkgs/tools/archivers/unar/default.nix b/pkgs/tools/archivers/unar/default.nix
index 2fdaf2def590..ee1693ee18e2 100644
--- a/pkgs/tools/archivers/unar/default.nix
+++ b/pkgs/tools/archivers/unar/default.nix
@@ -67,7 +67,7 @@ stdenv.mkDerivation rec {
 
   dontConfigure = true;
 
-  sourceRoot = "./${src.name}/XADMaster";
+  sourceRoot = "${src.name}/XADMaster";
 
   installPhase = ''
     runHook preInstall
diff --git a/pkgs/tools/misc/usbimager/default.nix b/pkgs/tools/misc/usbimager/default.nix
index 533f61a9c7d1..a3660d71da4c 100644
--- a/pkgs/tools/misc/usbimager/default.nix
+++ b/pkgs/tools/misc/usbimager/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-CEGUXJXqXmD8uT93T9dg49Lf5vTpAzQjdnhYmbR5zTI=";
   };
 
-  sourceRoot = "${src.name}/src/";
+  sourceRoot = "${src.name}/src";
 
   nativeBuildInputs = [ pkg-config wrapGAppsHook ];
   buildInputs = lib.optionals withUdisks [ udisks glib ]
diff --git a/pkgs/tools/networking/bully/default.nix b/pkgs/tools/networking/bully/default.nix
index c82971d8217a..55ff196154e3 100644
--- a/pkgs/tools/networking/bully/default.nix
+++ b/pkgs/tools/networking/bully/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  sourceRoot = "./${src.name}/src";
+  sourceRoot = "${src.name}/src";
 
   installPhase = ''
     install -Dm555 -t $out/bin bully
diff --git a/pkgs/tools/security/mpw/default.nix b/pkgs/tools/security/mpw/default.nix
index 0fe45039b9be..8d6f7f4f3b1d 100644
--- a/pkgs/tools/security/mpw/default.nix
+++ b/pkgs/tools/security/mpw/default.nix
@@ -15,7 +15,7 @@ in stdenv.mkDerivation rec {
     inherit rev;
   };
 
-  sourceRoot = "./${src.name}/platform-independent/c/cli";
+  sourceRoot = "${src.name}/platform-independent/c/cli";
 
   postPatch = ''
     rm build
diff --git a/pkgs/tools/typesetting/xmlroff/default.nix b/pkgs/tools/typesetting/xmlroff/default.nix
index 69c48120b061..dd8adab9ee8a 100644
--- a/pkgs/tools/typesetting/xmlroff/default.nix
+++ b/pkgs/tools/typesetting/xmlroff/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
     popt
   ];
 
-  sourceRoot = "${src.name}/xmlroff/";
+  sourceRoot = "${src.name}/xmlroff";
 
   enableParallelBuilding = true;