From 4c996b0a9ca3c7ac296cdd71f65f2bf4f61a030d Mon Sep 17 00:00:00 2001
From: TomaSajt <62384384+TomaSajt@users.noreply.github.com>
Date: Wed, 22 Jul 2026 03:07:04 +0200
Subject: [PATCH] rPackages.talib: fix build

---
 pkgs/development/r-modules/default.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pkgs/development/r-modules/default.nix b/pkgs/development/r-modules/default.nix
index 0f42fc3dbce8..fd8a873d647b 100644
--- a/pkgs/development/r-modules/default.nix
+++ b/pkgs/development/r-modules/default.nix
@@ -937,6 +937,7 @@ let
     symbolicQspray = [ pkgs.pkg-config ];
     sysfonts = [ pkgs.pkg-config ];
     systemfonts = [ pkgs.pkg-config ];
+    talib = [ pkgs.pkg-config ];
     tergo = with pkgs; [
       cargo
       rustc
@@ -1698,6 +1699,7 @@ let
       fontconfig
       freetype
     ];
+    talib = [ pkgs.ta-lib ];
     tcltk2 = with pkgs; [
       tcl
       tk
@@ -2839,6 +2841,13 @@ let
       '';
     });
 
+    talib = old.talib.overrideAttrs (attrs: {
+      # the conftest.c compilation test fails because for some reason ta-lib doesn't link libm
+      env = (attrs.env or { }) // {
+        NIX_LDFLAGS = (attrs.env.NIX_LDFLAGS or "") + " -lm";
+      };
+    });
+
     tesseract = old.tesseract.overrideAttrs (_: {
       preConfigure = ''
         substituteInPlace configure \