diff --git a/sys-devel/b/Manifest b/sys-devel/b/Manifest
new file mode 100644
index 0000000000..adae4544ee
--- /dev/null
+++ b/sys-devel/b/Manifest
@@ -0,0 +1,5 @@
+DIST b-0_pre20251029.tar.gz 184767 BLAKE2B 3bbea4a34f8ecb45a7d8dd57b6d1e305452a8735de723bc7b2530dcf98250cf25de2b4ff242d079535cecb68725d0b0eb620544062e7145faccce62278d31c37 SHA512 5344adcb6304d93beb87497cb0c862494720cac399ebdcecec99ef72c4757dedd6838b7a4028f10b49ca155e26d934d29e16cafe0dcb929cae67397b02dbf43b
+DIST cc-1.3.0.crate 97752 BLAKE2B 54981272327165bbcebcfa03d3800b9c5fa4109c1d9f20409be94136a93a01ecb11987a2609c540e2c9843f325b8e48407209392e6c1fd1e8dc846a2956423c0 SHA512 c9a121ac509203f8cfce800f01904afe5b393bd44098740b9da28b0e39c3066bdf3cffdb855945587f7037d13e297d2a98ad41539bf90027eca5d45d6c9f5919
+DIST find-msvc-tools-0.1.9.crate 31493 BLAKE2B 4137592addf8b58f4e4c02be537a72b132b38cecc1c263c2569fe40e2cfe4377e7141679f32661f44ed467cf9723343ab13732b3d6f4a2a84c610d0958e7e30b SHA512 729b3c1c1d520dffe5d88fc8b58e47fb7e86dc26e568fc317eea5ca8de0ee953fbafaa20ab34a6bfb43173bab39a90ff6954c11dab8d545e902305dafc8cd3de
+DIST rust.tar.gz 1080 BLAKE2B c29b72f07c8c413334b887610dbf19ac99496e49a87603fbdbf92ca10a6e450d3e23a38eadd528878b93db4fc60e6d233bd2c683e95f945f20aad83eda01489d SHA512 074b7a766272febfcc6cbf0646d18091e823a00f1dbbfed2449664b6a0aa31adaee09846aea64b30f1f4d01ca3e1db7e4cb3ada38178131ad1e76f4d4963fb87
+DIST shlex-2.0.1.crate 19332 BLAKE2B db2b6c5f7f30ad2f968d2dd386d39b362b8d19d7e17fffbb7407d6f35a4e165432b6607f3897c66cf8d32bf6e795ba7297080608c855b796fcf19842f4c509fa SHA512 d1bf35e2c5a93c718d3cc395fc4b06cc0c42d4891c0f37247de7e179492478020f0c57ae74c461d5bb1f833b071fd5c036d8d6d6ab8b61be6140cb64ae525921
diff --git a/sys-devel/b/b-0_pre20251029.ebuild b/sys-devel/b/b-0_pre20251029.ebuild
new file mode 100644
index 0000000000..ff74e5fa27
--- /dev/null
+++ b/sys-devel/b/b-0_pre20251029.ebuild
@@ -0,0 +1,61 @@
+# Copyright 2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+CRATES="
+cc@1.3.0
+find-msvc-tools@0.1.9
+shlex@2.0.1
+"
+
+inherit cargo
+
+DESCRIPTION="A compiler for the B Programming Language implemented in Crust"
+HOMEPAGE="https://github.com/bext-lang/b"
+
+GIT_COMMIT="078429a578202d8f6c4c667c780fc48f3711567f"
+SRC_URI="
+	https://github.com/bext-lang/b/archive/${GIT_COMMIT}.tar.gz -> ${P}.tar.gz
+	https://github.com/masterwolf-git/b/raw/refs/heads/main/rust.tar.gz
+	${CARGO_CRATE_URIS}
+"
+S="${WORKDIR}/${PN}-${GIT_COMMIT}"
+
+LICENSE="MIT"
+# Dependent crate licenses
+LICENSE+=" || ( Apache-2.0 MIT )"
+SLOT="0"
+KEYWORDS="~amd64"
+
+src_prepare()
+{
+	cp "${WORKDIR}/Cargo.toml" "${S}/" || die
+	cp "${WORKDIR}/Cargo.lock" "${S}/" || die
+	cp "${WORKDIR}/build.rs" "${S}/"   || die
+	default
+}
+
+src_test()
+{
+
+mkdir -p build || die
+cp target/release/b build/b || die
+
+cargo_src_compile --bin btest
+einfo "Running btest matrix..."
+./target/release/btest || die "btest failed"
+}
+
+src_compile()
+{
+cargo_src_compile --bin bgen
+einfo "Running bgen code generator..."
+./target/release/bgen || die "bgen execution failed"
+cargo_src_compile --bin b
+}
+
+src_install()
+{
+cargo_src_install --bin b
+}
diff --git a/sys-devel/b/metadata.xml b/sys-devel/b/metadata.xml
new file mode 100644
index 0000000000..d91e34771b
--- /dev/null
+++ b/sys-devel/b/metadata.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+        <maintainer type="person">
+                <email>shimontrolles@gmail.com</email>
+                <name>Shimon Trolles</name>
+        </maintainer>
+        <upstream>
+                <remote-id type="github">bext-lang/b</remote-id>
+        </upstream>
+</pkgmetadata>