From 9603c41bf97839d7f8b2748b70271d6a17a1a44f Mon Sep 17 00:00:00 2001
From: Ghislain Vaillant <ghislain.vaillant@inria.fr>
Date: Mon, 24 Aug 2026 12:51:38 +0200
Subject: hep: Add collier.

* guix-science/packages/hep.scm (collier): New variable.
---
 guix-science/packages/hep.scm | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/guix-science/packages/hep.scm b/guix-science/packages/hep.scm
index 267a7e9..c52857b 100644
--- a/guix-science/packages/hep.scm
+++ b/guix-science/packages/hep.scm
@@ -173,6 +173,37 @@ package.")
 
 (define-public clhep clhep-2.4.7.2)
 
+(define-public collier
+  (package
+    (name "collier")
+    (version "1.2.10")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://gitlab.com/collier3/collier.git")
+             (commit (string-append "COLLIER-" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "19br59lnzygyw5mkb79z03h6dzrlhjx6qkraqvnj4a1jjg9bclbp"))))
+    (build-system cmake-build-system)
+    (arguments
+     (list
+      #:phases
+      #~(modify-phases %standard-phases
+          (replace 'check
+            (lambda* (#:key tests? #:allow-other-keys)
+              (when tests?
+                (invoke "make" "demo")))))))
+    (native-inputs (list gfortran))
+    (home-page "https://collier.hepforge.org/")
+    (synopsis "Complex One-Loop LIbrary with Extended Regularizations")
+    (description
+     "@code{COLLIER} is a fortran library for the numerical evaluation of
+one-loop scalar and tensor integrals appearing in perturbative relativistic
+quantum field theory.")
+    (license license:gpl3)))
+
 (define-public evtgen
   (package
     (name "evtgen")
-- 
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