diff --git a/Cargo.lock b/Cargo.lock
index 1a018d4efce13..46c82a621057c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4710,7 +4710,6 @@ dependencies = [
  "fs-err",
  "itertools 0.13.0",
  "markdown",
- "mimalloc",
  "owo-colors",
  "pep508_rs",
  "poloto",
@@ -4722,7 +4721,6 @@ dependencies = [
  "serde_json",
  "tagu",
  "textwrap",
- "tikv-jemallocator",
  "tokio",
  "tracing",
  "tracing-durations-export",
@@ -4733,6 +4731,7 @@ dependencies = [
  "uv-installer",
  "uv-macros",
  "uv-options-metadata",
+ "uv-production-memory-allocator",
  "uv-python",
  "uv-settings",
  "uv-workspace",
diff --git a/Cargo.toml b/Cargo.toml
index 339c7c5b3b021..fcb017028d39e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,6 +4,10 @@ exclude = [
   "scripts",
   # Needs nightly
   "crates/uv-trampoline",
+  # Only used to pull in features, allocators, etc. — we specifically don't want them
+  # to be part of a workspace-wide cargo check, cargo clippy, etc.
+  "crates/uv-production-memory-allocator",
+  "crates/uv-production-flate2-backend",
 ]
 resolver = "2"
 
@@ -56,8 +60,6 @@ uv-version = { path = "crates/uv-version" }
 uv-virtualenv = { path = "crates/uv-virtualenv" }
 uv-warnings = { path = "crates/uv-warnings" }
 uv-workspace = { path = "crates/uv-workspace" }
-uv-production-memory-allocator = { path = "crates/uv-production-memory-allocator" }
-uv-production-flate2-backend = { path = "crates/uv-production-flate2-backend" }
 
 anstream = { version = "0.6.13" }
 anyhow = { version = "1.0.80" }
@@ -169,7 +171,7 @@ xz2 = { version = "0.1.7" }
 zip = { version = "0.6.6", default-features = false, features = ["deflate"] }
 
 [workspace.metadata.cargo-shear]
-ignored = ["flate2", "xz2", "uv-production-memory-allocator", "uv-production-flate2-backend"]
+ignored = ["flate2", "xz2"]
 
 [patch.crates-io]
 # For pyproject-toml
diff --git a/crates/uv-dev/Cargo.toml b/crates/uv-dev/Cargo.toml
index d7cef9f7823cb..4b6515555dd08 100644
--- a/crates/uv-dev/Cargo.toml
+++ b/crates/uv-dev/Cargo.toml
@@ -52,12 +52,7 @@ tracing = { workspace = true }
 tracing-durations-export = { workspace = true, features = ["plot"] }
 tracing-subscriber = { workspace = true }
 walkdir = { workspace = true }
-
-[target.'cfg(target_os = "windows")'.dependencies]
-mimalloc = { version = "0.1.39" }
-
-[target.'cfg(all(not(target_os = "windows"), not(target_os = "openbsd"), any(target_arch = "x86_64", target_arch = "aarch64", target_arch = "powerpc64")))'.dependencies]
-tikv-jemallocator = { version = "0.6.0" }
+uv-production-memory-allocator = { path = "../uv-production-memory-allocator", optional = true }
 
 [[bin]]
 name = "uv-dev"
@@ -68,4 +63,8 @@ required-features = ["dev"]
 default = []
 # Actually build the dev CLI.
 dev = []
+production = ["dep:uv-production-memory-allocator"]
 render = ["poloto", "resvg", "tagu"]
+
+[package.metadata.cargo-shear]
+ignored = ["flate2", "uv-production-flate2-backend"]
diff --git a/crates/uv-production-flate2-backend/Cargo.toml b/crates/uv-production-flate2-backend/Cargo.toml
index a094763c6183b..57584c2e709c7 100644
--- a/crates/uv-production-flate2-backend/Cargo.toml
+++ b/crates/uv-production-flate2-backend/Cargo.toml
@@ -1,19 +1,10 @@
 [package]
 name = "uv-production-flate2-backend"
 version = "0.1.0"
-edition.workspace = true
-rust-version.workspace = true
-homepage.workspace = true
-documentation.workspace = true
-repository.workspace = true
-authors.workspace = true
-license.workspace = true
+publish = false
 
 [target.'cfg(not(target_arch = "s390x"))'.dependencies]
 flate2 = { version = "1.0.28", default-features = false, features = ["zlib-ng"] }
 
 [target.'cfg(target_arch = "s390x")'.dependencies]
 flate2 = { version = "1.0.28", default-features = false, features = ["rust_backend"] }
-
-[lints]
-workspace = true
diff --git a/crates/uv-production-memory-allocator/Cargo.toml b/crates/uv-production-memory-allocator/Cargo.toml
index 6371911661be1..631f274eb2e5a 100644
--- a/crates/uv-production-memory-allocator/Cargo.toml
+++ b/crates/uv-production-memory-allocator/Cargo.toml
@@ -1,16 +1,7 @@
 [package]
 name = "uv-production-memory-allocator"
 version = "0.1.0"
-edition.workspace = true
-rust-version.workspace = true
-homepage.workspace = true
-documentation.workspace = true
-repository.workspace = true
-authors.workspace = true
-license.workspace = true
-
-[lints]
-workspace = true
+publish = false
 
 [dependencies]
 
diff --git a/crates/uv/Cargo.toml b/crates/uv/Cargo.toml
index a9c0722ed1d4d..cf5bcd7259859 100644
--- a/crates/uv/Cargo.toml
+++ b/crates/uv/Cargo.toml
@@ -45,8 +45,8 @@ uv-types = { workspace = true }
 uv-virtualenv = { workspace = true }
 uv-warnings = { workspace = true }
 uv-workspace = { workspace = true }
-uv-production-memory-allocator = { workspace = true, optional = true }
-uv-production-flate2-backend = { workspace = true, optional = true }
+uv-production-memory-allocator = { path = "../uv-production-memory-allocator", optional = true }
+uv-production-flate2-backend = { path = "../uv-production-flate2-backend", optional = true }
 
 anstream = { workspace = true }
 anyhow = { workspace = true }