diff --git a/recipes/incoming/b3sum.toml b/recipes/incoming/b3sum.toml
index e3392ce2..08ee3934 100644
--- a/recipes/incoming/b3sum.toml
+++ b/recipes/incoming/b3sum.toml
@@ -10,40 +10,16 @@ tarball = "https://github.com/BLAKE3-team/BLAKE3/archive/refs/tags/1.8.5/BLAKE3-
 # sha512 = "53344e5fa3d3058f9190f159991652a11951ce960236793d2ef2328b1c7f9310f11a7f84c6a2487aed253bc6d8269dbf4d7fbd30d765480849b2ef82e22c418e"
 sha256  = "220bd81286e2a0585beac66d41ac3f4c2c33ae8a4e339fc88cf22d5e00514fe9"
 
+# Reescrita como receta Cargo LIMPIA: el import de Alpine ADEMÁS compilaba la libblake3 C
+# (cmake/ninja+TBB) ⇒ deps.build=[samurai,onetbb] (samurai=ninja, herramienta de build). No
+# queremos la lib C: sólo el BINARIO b3sum (Rust, crate blake3 vendoreado). Sin deps externas.
 [build]
 compiler = "zig-cc"
 target   = "x86_64-linux-musl"
 link     = "static"
-flags    = []
+# root = paquete `blake3` con [workspace] NO-virtual (tiene [package]) ⇒ el lab no auto-inyecta
+# -p; el bin b3sum vive en el miembro b3sum/ ⇒ -p explícito (patrón arje-installer).
+flags    = ["-p", "b3sum", "--bin", "b3sum"]
 
 [build.phases]
-# de build() de Alpine (traducido; el lab provee $CBUILD/$CHOST — Etapa G Fase 3; revisá --shared para estático):
-compile = '''
-_abuild_phase() {
-cargo auditable build --release --frozen \
-		${_features:+--features $_features}
-
-	cmake -S ../c/ -B build -G Ninja \
-		-DCMAKE_INSTALL_PREFIX=/usr \
-		-DCMAKE_INSTALL_LIBDIR=lib \
-		-DBUILD_SHARED_LIBS=ON \
-		-DCMAKE_BUILD_TYPE=None \
-		-DBLAKE3_USE_TBB=ON
-	cmake --build build
-}
-_abuild_phase
-'''
-# de package() de Alpine (traducido $pkgdir→/out):
-install = '''
-_abuild_phase() {
-pkgdesc="Command line implementation of the BLAKE3 hash function"
-
-	install -Dm755 target/release/b3sum -t "/out"/usr/bin/
-
-	DESTDIR="/out" cmake --install build
-}
-_abuild_phase
-'''
-
-[deps]
-build = ["samurai", "onetbb"]
+install = "mkdir -p /out/usr/bin && cp target/release/b3sum /out/usr/bin/b3sum"