diff --git a/.tekton/lightspeed-stack-pull-request.yaml b/.tekton/lightspeed-stack-pull-request.yaml
index 268679c3b..3c6658da1 100644
--- a/.tekton/lightspeed-stack-pull-request.yaml
+++ b/.tekton/lightspeed-stack-pull-request.yaml
@@ -34,7 +34,35 @@ spec:
   - name: build-source-image
     value: 'true'
   - name: prefetch-input
-    value: '[{"type": "rpm", "path": "."}, {"type": "pip", "path": ".", "allow_binary": "true", "requirements_files": ["requirements.x86_64.txt", "requirements.aarch64.txt", "requirements.hermetic.txt", "requirements.torch.txt"]}]'
+    # no source available: torch, faiss-cpu
+    # hermeto prefetch problems: uv, pip, jiter, tiktoken,
+    # to accelerate build:numpy, scipy, pandas, pillow, scikit_learn
+    # those need cmake to build: pyarrow
+    # those need cargo to build: jiter, tiktoken, cryptography, fastuuid, hf_xet, maturin, pydantic_core, rpds_py, safetensors, tokenizers
+    value: |
+     [
+        {
+          "type": "rpm",
+          "path": "."
+        },
+        {
+          "type": "pip",
+          "path": ".",
+          "requirements_files": [
+            "requirements.x86_64.txt",
+            "requirements.aarch64.txt",
+            "requirements.hermetic.txt",
+            "requirements.torch.txt"
+          ],
+          "requirements_build_files": ["requirements-build.txt"],
+          "binary": {
+            "packages": "torch,faiss-cpu,uv,pip,jiter,tiktoken,numpy,scipy,pandas,pillow,scikit_learn,pyarrow,cryptography,fastuuid,hf_xet,maturin,pydantic_core,rpds_py,safetensors,tokenizers",
+            "os": "linux",
+            "arch": "x86_64,aarch64",
+            "py_version": "312"
+          }
+        }
+      ]
   - name: hermetic
     value: 'true'
   - name: dockerfile
diff --git a/.tekton/lightspeed-stack-push.yaml b/.tekton/lightspeed-stack-push.yaml
index bec184957..e25588a45 100644
--- a/.tekton/lightspeed-stack-push.yaml
+++ b/.tekton/lightspeed-stack-push.yaml
@@ -31,7 +31,30 @@ spec:
   - name: build-source-image
     value: 'true'
   - name: prefetch-input
-    value: '[{"type": "rpm", "path": "."}, {"type": "pip", "path": ".", "allow_binary": "true", "requirements_files": ["requirements.x86_64.txt", "requirements.aarch64.txt", "requirements.hermetic.txt", "requirements.torch.txt"]}]'
+    value: |
+      [
+        {
+          "type": "rpm",
+          "path": "."
+        },
+        {
+          "type": "pip",
+          "path": ".",
+          "requirements_files": [
+            "requirements.x86_64.txt",
+            "requirements.aarch64.txt",
+            "requirements.hermetic.txt",
+            "requirements.torch.txt"
+          ],
+          "requirements_build_files": ["requirements-build.txt"],
+          "binary": {
+            "packages": "torch,faiss-cpu,uv,pip,jiter,tiktoken,numpy,scipy,pandas,pillow,scikit_learn,pyarrow,cryptography,fastuuid,hf_xet,maturin,pydantic_core,rpds_py,safetensors,tokenizers",
+            "os": "linux",
+            "arch": "x86_64,aarch64",
+            "py_version": "312"
+          }
+        }
+      ]
   - name: hermetic
     value: 'true'
   - name: dockerfile
diff --git a/Containerfile b/Containerfile
index c35cc3ad0..6632706d1 100644
--- a/Containerfile
+++ b/Containerfile
@@ -31,7 +31,10 @@ COPY ${LSC_SOURCE_DIR}/pyproject.toml ${LSC_SOURCE_DIR}/LICENSE ${LSC_SOURCE_DIR
 # PIP_FIND_LINKS=/cachi2/output/deps/pip
 # PIP_NO_INDEX=true
 RUN if [ -f /cachi2/cachi2.env ]; then \
-    . /cachi2/cachi2.env && uv venv --seed --no-index --find-links ${PIP_FIND_LINKS} && . .venv/bin/activate && pip install --no-index --find-links ${PIP_FIND_LINKS} -r requirements.$(uname -m).txt -r requirements.torch.txt; \
+    . /cachi2/cachi2.env && \
+    uv venv --seed --no-index --find-links ${PIP_FIND_LINKS} && \
+    . .venv/bin/activate && \
+    pip install --no-index --find-links ${PIP_FIND_LINKS} -r requirements.$(uname -m).txt -r requirements.torch.txt; \
     else \
     uv sync --locked --no-dev --group llslibdev; \
     fi
diff --git a/Makefile b/Makefile
index 2dd9fc58a..f2c845ba5 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+SHELL := /bin/bash
+
 ARTIFACT_DIR := $(if $(ARTIFACT_DIR),$(ARTIFACT_DIR),tests/test_results)
 PATH_TO_PLANTUML := ~/bin
 
@@ -114,6 +116,9 @@ konflux-requirements:	## generate hermetic requirements.*.txt file for konflux b
 	./scripts/remove_torch_deps.sh requirements.x86_64.txt
 	./scripts/remove_torch_deps.sh requirements.aarch64.txt
 	echo "torch==${TORCH_VERSION}" | uv pip compile - -o requirements.torch.txt --generate-hashes --python-version 3.12 --torch-backend cpu --emit-index-url --no-deps --index-url https://download.pytorch.org/whl/cpu --refresh
+	uv run pybuild-deps compile --output-file=requirements-build.txt \
+	<(grep -v "^faiss-cpu" requirements.hermetic.txt) \
+	<(grep -v "^faiss-cpu" requirements.x86_64.txt)
 
 help: ## Show this help screen
 	@echo 'Usage: make <OPTIONS> ... <TARGETS>'
diff --git a/pyproject.toml b/pyproject.toml
index fd6028e38..5a7eba49b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -122,6 +122,7 @@ dev = [
     "openapi-to-md>=0.1.0b2",
     "pytest-subtests>=0.14.2",
     "bandit>=1.8.6",
+    "pybuild-deps>=0.5.0",
 ]
 llslibdev = [
     # To check llama-stack API provider dependecies:
diff --git a/requirements-build.txt b/requirements-build.txt
new file mode 100644
index 000000000..c5affb330
--- /dev/null
+++ b/requirements-build.txt
@@ -0,0 +1,306 @@
+#
+# This file is autogenerated by pip-compile with Python 3.12
+# by the following command:
+#
+#    pybuild-deps compile --output-file=requirements-build.txt /dev/fd/62 /dev/fd/63
+#
+beniget==0.4.2.post1
+    # via pythran
+calver==2025.10.20
+    # via trove-classifiers
+cffi==2.0.0
+    # via cryptography
+coherent-licensed==0.5.2
+    # via
+    #   importlib-metadata
+    #   zipp
+cython==3.1.8
+    # via scipy
+cython==3.2.4
+    # via
+    #   asyncpg
+    #   lxml
+    #   numpy
+    #   pandas
+    #   pyarrow
+    #   pyyaml
+    #   scikit-learn
+    #   sqlalchemy
+dunamai==1.25.0
+    # via uv-dynamic-versioning
+expandvars==1.1.2
+    # via
+    #   frozenlist
+    #   propcache
+    #   yarl
+flit-core==3.12.0
+    # via
+    #   aiosqlite
+    #   click
+    #   coherent-licensed
+    #   idna
+    #   jinja2
+    #   markdown-it-py
+    #   mdurl
+    #   packaging
+    #   pathspec
+    #   pip
+    #   pyproject-metadata
+    #   threadpoolctl
+    #   typing-extensions
+    #   wheel
+gast==0.6.0
+    # via
+    #   beniget
+    #   pythran
+hatch-fancy-pypi-readme==25.1.0
+    # via
+    #   attrs
+    #   httpcore
+    #   httpx
+    #   jsonschema
+    #   llama-stack-client
+    #   openai
+    #   pydantic
+hatch-vcs==0.5.0
+    # via
+    #   attrs
+    #   filelock
+    #   fsspec
+    #   jsonschema
+    #   jsonschema-specifications
+    #   referencing
+    #   scikit-build-core
+    #   termcolor
+    #   urllib3
+hatchling==1.26.3
+    # via
+    #   hatch-fancy-pypi-readme
+    #   llama-stack-client
+    #   openai
+hatchling==1.28.0
+    # via
+    #   annotated-types
+    #   attrs
+    #   dnspython
+    #   expandvars
+    #   filelock
+    #   fsspec
+    #   hatch-fancy-pypi-readme
+    #   hatch-vcs
+    #   httpcore
+    #   httpx
+    #   jsonschema
+    #   jsonschema-specifications
+    #   mcp
+    #   opentelemetry-api
+    #   opentelemetry-exporter-otlp
+    #   opentelemetry-exporter-otlp-proto-common
+    #   opentelemetry-exporter-otlp-proto-grpc
+    #   opentelemetry-exporter-otlp-proto-http
+    #   opentelemetry-instrumentation
+    #   opentelemetry-proto
+    #   opentelemetry-sdk
+    #   opentelemetry-semantic-conventions
+    #   pydantic
+    #   pydantic-settings
+    #   pygments
+    #   python-multipart
+    #   referencing
+    #   scikit-build-core
+    #   starlette
+    #   termcolor
+    #   typing-inspection
+    #   urllib3
+    #   uv-dynamic-versioning
+    #   uvicorn
+jinja2==3.1.6
+    # via uv-dynamic-versioning
+markupsafe==3.0.3
+    # via jinja2
+maturin==1.11.2
+    # via
+    #   cryptography
+    #   fastuuid
+    #   hf-xet
+    #   jiter
+    #   pydantic-core
+    #   rpds-py
+    #   safetensors
+    #   tokenizers
+    #   uv
+meson-python==0.18.0
+    # via
+    #   numpy
+    #   pandas
+    #   scikit-learn
+    #   scipy
+meson==1.10.0
+    # via
+    #   meson-python
+    #   pandas
+numpy==2.2.6
+    # via
+    #   pandas
+    #   pyarrow
+    #   scikit-learn
+    #   scipy
+packaging==25.0
+    # via
+    #   hatchling
+    #   meson-python
+    #   scikit-build-core
+    #   setuptools-scm
+pathspec==1.0.1
+    # via
+    #   hatchling
+    #   scikit-build-core
+pdm-backend==2.4.6
+    # via
+    #   annotated-doc
+    #   fastapi
+pkgconfig==1.5.5
+    # via aiohttp
+pluggy==1.6.0
+    # via hatchling
+ply==3.11
+    # via pythran
+poetry-core==2.2.1
+    # via
+    #   aiohappyeyeballs
+    #   dunamai
+    #   litellm
+    #   pkgconfig
+    #   rich
+    #   rsa
+    #   tomlkit
+pybind11==3.0.1
+    # via
+    #   pillow
+    #   scipy
+pycparser==2.23
+    # via cffi
+pyproject-metadata==0.10.0
+    # via meson-python
+pythran==0.18.1
+    # via scipy
+scikit-build-core==0.11.6
+    # via pybind11
+scipy==1.16.3
+    # via scikit-learn
+semantic-version==2.10.0
+    # via setuptools-rust
+setuptools-rust==1.12.0
+    # via
+    #   maturin
+    #   tiktoken
+setuptools-scm==7.1.0
+    # via python-dateutil
+setuptools-scm==9.2.2
+    # via
+    #   anyio
+    #   hatch-vcs
+    #   httpx-sse
+    #   importlib-metadata
+    #   pluggy
+    #   pyarrow
+    #   setuptools-rust
+    #   sniffio
+    #   tqdm
+    #   urllib3
+    #   zipp
+tomlkit==0.13.3
+    # via uv-dynamic-versioning
+trove-classifiers==2025.12.1.14
+    # via hatchling
+typing-extensions==4.15.0
+    # via setuptools-scm
+uv-dynamic-versioning==0.12.0
+    # via mcp
+versioneer==0.29
+    # via pandas
+wheel==0.45.1
+    # via
+    #   authlib
+    #   cachetools
+    #   fire
+    #   httpx-sse
+    #   litellm
+    #   meson
+    #   pandas
+    #   python-dateutil
+    #   sentence-transformers
+    #   tiktoken
+    #   tqdm
+    #   tzdata
+
+# The following packages are considered to be unsafe in a requirements file:
+setuptools==80.9.0
+    # via
+    #   aiohttp
+    #   aiosignal
+    #   anyio
+    #   asyncpg
+    #   authlib
+    #   blobfile
+    #   cachetools
+    #   calver
+    #   certifi
+    #   cffi
+    #   charset-normalizer
+    #   cryptography
+    #   dill
+    #   distro
+    #   emoji
+    #   fire
+    #   frozenlist
+    #   googleapis-common-protos
+    #   greenlet
+    #   httpx-sse
+    #   importlib-metadata
+    #   joblib
+    #   llama-stack
+    #   lxml
+    #   markupsafe
+    #   maturin
+    #   meson
+    #   mpmath
+    #   multidict
+    #   multiprocess
+    #   networkx
+    #   pathspec
+    #   pillow
+    #   pluggy
+    #   polyleven
+    #   prometheus-client
+    #   prompt-toolkit
+    #   propcache
+    #   psutil
+    #   pyarrow
+    #   pyasn1
+    #   pyasn1-modules
+    #   pycryptodomex
+    #   pyjwt
+    #   python-dateutil
+    #   python-dotenv
+    #   pythran
+    #   pyyaml
+    #   regex
+    #   semver
+    #   sentence-transformers
+    #   setuptools-rust
+    #   setuptools-scm
+    #   sniffio
+    #   sqlalchemy
+    #   sse-starlette
+    #   tiktoken
+    #   tqdm
+    #   tree-sitter
+    #   trl
+    #   trove-classifiers
+    #   tzdata
+    #   versioneer
+    #   wrapt
+    #   xxhash
+    #   yarl
+    #   zipp
diff --git a/uv.lock b/uv.lock
index 90327ad9a..10e656bdc 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1253,6 +1253,7 @@ dev = [
     { name = "build" },
     { name = "mypy" },
     { name = "openapi-to-md" },
+    { name = "pybuild-deps" },
     { name = "pydocstyle" },
     { name = "pylint" },
     { name = "pyright" },
@@ -1330,6 +1331,7 @@ dev = [
     { name = "build", specifier = ">=1.2.2.post1" },
     { name = "mypy", specifier = ">=1.16.0" },
     { name = "openapi-to-md", specifier = ">=0.1.0b2" },
+    { name = "pybuild-deps", specifier = ">=0.5.0" },
     { name = "pydocstyle", specifier = ">=6.3.0" },
     { name = "pylint", specifier = ">=3.3.7" },
     { name = "pyright", specifier = ">=1.1.401" },
@@ -2134,6 +2136,32 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/ac/82/8b9b97bba2e3576a340f93b044a3a3a09841170ab4c1eb0d5c93469fd32f/pillow-12.1.0-cp313-cp313t-win_arm64.whl", hash = "sha256:80941e6d573197a0c28f394753de529bb436b1ca990ed6e765cf42426abc39f8", size = 2454547, upload-time = "2026-01-02T09:12:18.704Z" },
 ]
 
+[[package]]
+name = "pip"
+version = "25.3"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/fe/6e/74a3f0179a4a73a53d66ce57fdb4de0080a8baa1de0063de206d6167acc2/pip-25.3.tar.gz", hash = "sha256:8d0538dbbd7babbd207f261ed969c65de439f6bc9e5dbd3b3b9a77f25d95f343", size = 1803014, upload-time = "2025-10-25T00:55:41.394Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/44/3c/d717024885424591d5376220b5e836c2d5293ce2011523c9de23ff7bf068/pip-25.3-py3-none-any.whl", hash = "sha256:9655943313a94722b7774661c21049070f6bbb0a1516bf02f7c8d5d9201514cd", size = 1778622, upload-time = "2025-10-25T00:55:39.247Z" },
+]
+
+[[package]]
+name = "pip-tools"
+version = "7.5.2"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "build" },
+    { name = "click" },
+    { name = "pip" },
+    { name = "pyproject-hooks" },
+    { name = "setuptools" },
+    { name = "wheel" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/c4/79/d149fb40bc425ad9defcb8ff73c65088bbc36a84b1825e035397d1c40624/pip_tools-7.5.2.tar.gz", hash = "sha256:2d64d72da6a044da1110257d333960563d7a4743637e8617dd2610ae7b82d60f", size = 164815, upload-time = "2025-11-12T22:46:12.627Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/98/c1/61aef9517201b43cc20f4a5c9339a072644cbaf0e9ce4e4970c2a105f766/pip_tools-7.5.2-py3-none-any.whl", hash = "sha256:2fe16db727bbe5bf28765aeb581e792e61be51fc275545ef6725374ad720a1ce", size = 66905, upload-time = "2025-11-12T22:46:11.374Z" },
+]
+
 [[package]]
 name = "platformdirs"
 version = "4.5.1"
@@ -2387,6 +2415,21 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/47/8d/d529b5d697919ba8c11ad626e835d4039be708a35b0d22de83a269a6682c/pyasn1_modules-0.4.2-py3-none-any.whl", hash = "sha256:29253a9207ce32b64c3ac6600edc75368f98473906e8fd1043bd6b5b1de2c14a", size = 181259, upload-time = "2025-03-28T02:41:19.028Z" },
 ]
 
+[[package]]
+name = "pybuild-deps"
+version = "0.5.0"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "click" },
+    { name = "pip-tools" },
+    { name = "requests" },
+    { name = "xdg" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/62/33/ed89d0113158801aa111178f7b7671e336bf89005eeed8a1eeca4d14a0ff/pybuild_deps-0.5.0.tar.gz", hash = "sha256:fa488db42cc53f93926ccb55ef56fb300fbd7769d31a56ebc7f83f11e28aeac8", size = 26352, upload-time = "2025-03-15T18:28:46.224Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/ef/d6/b632fc0440417a886fc5e066c1d7a0c1a6e13d024181cd60fbca9d2001e8/pybuild_deps-0.5.0-py3-none-any.whl", hash = "sha256:4cc5b8634b5aac371755a7ff33da1f47cf528938e419c1fb943cc95a8c3337e7", size = 29284, upload-time = "2025-03-15T18:28:45.029Z" },
+]
+
 [[package]]
 name = "pycparser"
 version = "2.23"
@@ -3564,6 +3607,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/34/db/b10e48aa8fff7407e67470363eac595018441cf32d5e1001567a7aeba5d2/websocket_client-1.9.0-py3-none-any.whl", hash = "sha256:af248a825037ef591efbf6ed20cc5faa03d3b47b9e5a2230a529eeee1c1fc3ef", size = 82616, upload-time = "2025-10-07T21:16:34.951Z" },
 ]
 
+[[package]]
+name = "wheel"
+version = "0.45.1"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/8a/98/2d9906746cdc6a6ef809ae6338005b3f21bb568bea3165cfc6a243fdc25c/wheel-0.45.1.tar.gz", hash = "sha256:661e1abd9198507b1409a20c02106d9670b2576e916d58f520316666abca6729", size = 107545, upload-time = "2024-11-23T00:18:23.513Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/0b/2c/87f3254fd8ffd29e4c02732eee68a83a1d3c346ae39bc6822dcbcb697f2b/wheel-0.45.1-py3-none-any.whl", hash = "sha256:708e7481cc80179af0e556bbf0cc00b8444c7321e2700b8d8580231d13017248", size = 72494, upload-time = "2024-11-23T00:18:21.207Z" },
+]
+
 [[package]]
 name = "wrapt"
 version = "1.17.3"
@@ -3593,6 +3645,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/1f/f6/a933bd70f98e9cf3e08167fc5cd7aaaca49147e48411c0bd5ae701bb2194/wrapt-1.17.3-py3-none-any.whl", hash = "sha256:7171ae35d2c33d326ac19dd8facb1e82e5fd04ef8c6c0e394d7af55a55051c22", size = 23591, upload-time = "2025-08-12T05:53:20.674Z" },
 ]
 
+[[package]]
+name = "xdg"
+version = "6.0.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/2a/b9/0e6e6f19fb75cf5e1758f4f33c1256738f718966700cffc0fde2f966218b/xdg-6.0.0.tar.gz", hash = "sha256:24278094f2d45e846d1eb28a2ebb92d7b67fc0cab5249ee3ce88c95f649a1c92", size = 3453, upload-time = "2023-02-27T19:27:44.309Z" }
+wheels = [
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