4 files changed, 96 insertions, 0 deletions
diff --git a/dev-gap/grape/Manifest b/dev-gap/grape/Manifest
new file mode 100644
index 000000000000..83bd5d1f91d0
--- /dev/null
+++ b/dev-gap/grape/Manifest
@@ -0,0 +1 @@
+DIST grape-4.9.0.tar.gz 1941458 BLAKE2B b1bf1bce13897fb12989e9f31593078d3fe21a487e699fe19b7d1f9080703c631718f44aee7fd8f6571c35d2d832ac53ddb0baa325a3d2651a5b7bfdf46a7205 SHA512 6c160afd3d287aa408f72950c40ff72cd411a4db599003a417acadd2f91417db38d2e6b0f6b9dff3b7164124000c2d0f4e8d379227196fae4791f54350396ecc
diff --git a/dev-gap/grape/files/grape-4.9.0-exec.patch b/dev-gap/grape/files/grape-4.9.0-exec.patch
new file mode 100644
index 000000000000..3d410772ea00
--- /dev/null
+++ b/dev-gap/grape/files/grape-4.9.0-exec.patch
@@ -0,0 +1,21 @@
+diff --git a/lib/grape.g b/lib/grape.g
+index 683abb6..3f5fdf0 100644
+--- a/lib/grape.g
++++ b/lib/grape.g
+@@ -39,13 +39,12 @@ GRAPE_RANDOM := false; # Determines if certain random methods are to be used
+ GRAPE_NRANGENS := 18;  # The number of random generators taken for a subgroup
+ 		       # when  GRAPE_RANDOM=true.
+ 
+-GRAPE_NAUTY := true;   # Use nauty when true, else use bliss.
++GRAPE_NAUTY := @nauty@;   # Use nauty when true, else use bliss.
+ 
+-GRAPE_DREADNAUT_EXE := 
+-   ExternalFilename(DirectoriesPackagePrograms("grape"),"dreadnaut"); 
++GRAPE_DREADNAUT_EXE := "@GENTOO_PORTAGE_EPREFIX@/usr/bin/dreadnaut";
+    # filename of dreadnaut or dreadnautB executable
+ 
+-GRAPE_BLISS_EXE := ExternalFilename(DirectoriesSystemPrograms(),"bliss"); 
++GRAPE_BLISS_EXE := "@GENTOO_PORTAGE_EPREFIX@/usr/bin/bliss";
+    # filename of bliss executable
+ 
+ GRAPE_DREADNAUT_INPUT_USE_STRING := false;
diff --git a/dev-gap/grape/grape-4.9.0.ebuild b/dev-gap/grape/grape-4.9.0.ebuild
new file mode 100644
index 000000000000..023681f3b574
--- /dev/null
+++ b/dev-gap/grape/grape-4.9.0.ebuild
@@ -0,0 +1,41 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit gap-pkg prefix
+
+DESCRIPTION="GRaph Algorithms using PErmutation groups"
+SLOT="0"
+SRC_URI="https://github.com/gap-packages/${PN}/releases/download/v${PV}/${P}.tar.gz"
+
+LICENSE="Apache-2.0 GPL-2+"
+KEYWORDS="~amd64"
+IUSE="bliss"
+
+RDEPEND="bliss? ( sci-libs/bliss )
+	!bliss? ( sci-mathematics/nauty )"
+
+PATCHES=( "${FILESDIR}/${PN}-4.9.0-exec.patch" )
+
+DOCS=( README.md CHANGES.md )
+
+GAP_PKG_HTML_DOCDIR="htm"
+GAP_PKG_EXTRA_INSTALL=( grh )
+gap-pkg_enable_tests
+
+src_prepare() {
+	# The ./configure script and Makefile are only used to build
+	# the "dreadnaut" executable that we don't want anyway (we
+	# use the system copy; see $PATCHES).
+	rm -r nauty2_8_6 || die
+	rm configure Makefile.in || die
+
+	default
+
+	local nauty="true"
+	use bliss && nauty="false"
+
+	sed -i "s:@nauty@:${nauty}:" lib/grape.g || die
+	eprefixify lib/grape.g
+}
diff --git a/dev-gap/grape/metadata.xml b/dev-gap/grape/metadata.xml
new file mode 100644
index 000000000000..e408bb154bb4
--- /dev/null
+++ b/dev-gap/grape/metadata.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+  <maintainer type="person">
+    <email>mjo@gentoo.org</email>
+  </maintainer>
+  <maintainer type="person">
+    <email>frp.bissey@gmail.com</email>
+    <name>François Bissey</name>
+  </maintainer>
+  <maintainer type="project" proxied="proxy">
+    <email>proxy-maint@gentoo.org</email>
+    <name>Proxy Maintainers</name>
+  </maintainer>
+  <maintainer type="project">
+    <email>sci-mathematics@gentoo.org</email>
+    <name>Gentoo Mathematics Project</name>
+  </maintainer>
+  <longdescription lang="en">
+    GRAPE is a package for computing with graphs and groups, and is
+    primarily designed for constructing and analysing graphs related to
+    groups, finite geometries, and designs.
+  </longdescription>
+  <use>
+    <flag name="bliss">
+      Use <pkg>sci-libs/bliss</pkg> instead of
+      <pkg>sci-mathematics/nauty</pkg> as the backend.
+    </flag>
+  </use>
+  <upstream>
+    <remote-id type="github">gap-packages/grape</remote-id>
+  </upstream>
+</pkgmetadata>