diff --git a/pkgs/by-name/cs/csound/package.nix b/pkgs/by-name/cs/csound/package.nix
index 155fddc1ca92..95d836daba40 100644
--- a/pkgs/by-name/cs/csound/package.nix
+++ b/pkgs/by-name/cs/csound/package.nix
@@ -2,6 +2,7 @@
   lib,
   stdenv,
   fetchFromGitHub,
+  fetchpatch,
   cmake,
   libsndfile,
   libsamplerate,
@@ -36,6 +37,14 @@ stdenv.mkDerivation {
     sha256 = "sha256-NDYltwmjBsX1DWCjy8/4cXMSl3/mK+HaQHSKUmRR9TI=";
   };
 
+  patches = [
+    # Fix typo that breaks build
+    (fetchpatch {
+      url = "https://github.com/csound/csound/commit/bb9bafcfa17a87d3733eda1e25a812fd0be08ac6.diff";
+      hash = "sha256-0M047uALPAoyQP0LbfBAybb2DWQ2/6QwZXxUjs1O1fE=";
+    })
+  ];
+
   cmakeFlags = [
     "-DBUILD_CSOUND_AC=0"
   ] # fails to find Score.hpp
diff --git a/pkgs/by-name/fa/faust2/package.nix b/pkgs/by-name/fa/faust2/package.nix
index a6f23962d367..3eba50a9e712 100644
--- a/pkgs/by-name/fa/faust2/package.nix
+++ b/pkgs/by-name/fa/faust2/package.nix
@@ -6,7 +6,7 @@
   makeWrapper,
   pkg-config,
   cmake,
-  llvm_18, # does not build with 19+ due to API changes
+  llvm,
   emscripten,
   openssl,
   libsndfile,
@@ -24,13 +24,13 @@
 
 let
 
-  version = "2.81.10";
+  version = "2.83.1";
 
   src = fetchFromGitHub {
     owner = "grame-cncm";
     repo = "faust";
     tag = version;
-    hash = "sha256-xmaZY1jFIZQjWlQkJ+uHC4tY4pFPLJ+fKSbktIZkBFI=";
+    hash = "sha256-DojqKLoGb6aGpqpeTAXyLFsbWs/UgYr9nA+JMGa712A=";
     fetchSubmodules = true;
   };
 
@@ -65,7 +65,7 @@ let
         which
       ];
       buildInputs = [
-        llvm_18
+        llvm
         emscripten
         openssl
         libsndfile
@@ -81,7 +81,7 @@ let
 
       preConfigure = ''
         # include llvm-config in path
-        export PATH="${lib.getDev llvm_18}/bin:$PATH"
+        export PATH="${lib.getDev llvm}/bin:$PATH"
         cd build
 
       ''
diff --git a/pkgs/by-name/pu/puredata/package.nix b/pkgs/by-name/pu/puredata/package.nix
index 461da99484a9..54e04bba7ebb 100644
--- a/pkgs/by-name/pu/puredata/package.nix
+++ b/pkgs/by-name/pu/puredata/package.nix
@@ -2,6 +2,7 @@
   lib,
   stdenv,
   fetchurl,
+  fetchpatch,
   autoreconfHook,
   gettext,
   makeWrapper,
@@ -25,6 +26,12 @@ stdenv.mkDerivation rec {
   patches = [
     # expose error function used by dependents
     ./expose-error.patch
+
+    # Fix build with GCC 15
+    (fetchpatch {
+      url = "https://github.com/pure-data/pure-data/commit/95e4105bc1044cbbcbbbcc369480a77c298d7475.patch";
+      hash = "sha256-zFB9m8Nw80X9+a64Uft4tNRA4BHsVr8zxLqAof0jJEI=";
+    })
   ];
 
   nativeBuildInputs = [
diff --git a/pkgs/development/interpreters/supercollider/default.nix b/pkgs/development/interpreters/supercollider/default.nix
index 5251fdb8c7d6..4ef2631b8d7d 100644
--- a/pkgs/development/interpreters/supercollider/default.nix
+++ b/pkgs/development/interpreters/supercollider/default.nix
@@ -49,6 +49,12 @@ mkDerivation rec {
       url = "https://github.com/supercollider/supercollider/commit/7d1f3fbe54e122889489a2f60bbc6cd6bb3bce28.patch";
       hash = "sha256-gyE0B2qTbj0ppbLlYTMa2ooY3FHzzIrdrpWYr81Hy1Y=";
     })
+
+    # Fixes the build with GCC 15
+    (fetchpatch {
+      url = "https://github.com/supercollider/supercollider/commit/edfac5e24959b12286938a9402326e521c2d2b63.patch";
+      hash = "sha256-8DNCO5VEX6V0Q29A/v5tFC7u835bwNHvcNlZzmS0ADg=";
+    })
   ];
 
   postPatch = ''
diff --git a/pkgs/development/interpreters/supercollider/plugins/sc3-plugins.nix b/pkgs/development/interpreters/supercollider/plugins/sc3-plugins.nix
index a364f7ea032c..b3d5df6ac587 100644
--- a/pkgs/development/interpreters/supercollider/plugins/sc3-plugins.nix
+++ b/pkgs/development/interpreters/supercollider/plugins/sc3-plugins.nix
@@ -23,6 +23,12 @@ stdenv.mkDerivation rec {
       url = "https://github.com/supercollider/sc3-plugins/commit/3dc56bf7fcc1f2261afc13f96da762b78bcbfa51.patch";
       hash = "sha256-lvXvGunfmjt6i+XPog14IKdnH1Qk8vefxplSDkXXXHU=";
     })
+
+    # Fix build with GCC 15
+    (fetchpatch2 {
+      url = "https://github.com/supercollider/sc3-plugins/commit/deaa55a7204bedf65a2000a463ae87a481bf3eb8.patch";
+      hash = "sha256-d8+4ZmedAwVt/AlU/YKqQF+80shEa8DiPnvMwJtW/RM=";
+    })
   ];
 
   strictDeps = true;