diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 1e6a20d64..4e94b4ea6 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -23,9 +23,8 @@ env:
   CARGO_ARGS_NO_SSL: --no-default-features --features stdlib,importlib,stdio,encodings,sqlite,host_env
   # Crates excluded from workspace builds:
   # - rustpython_wasm: requires wasm target
-  # - rustpython-compiler-source: deprecated
   # - rustpython-venvlauncher: Windows-only
-  WORKSPACE_EXCLUDES: --exclude rustpython_wasm --exclude rustpython-compiler-source --exclude rustpython-venvlauncher
+  WORKSPACE_EXCLUDES: --exclude rustpython_wasm --exclude rustpython-venvlauncher
   X86_64_PC_WINDOWS_MSVC_OPENSSL_LIB_DIR: C:\Program Files\OpenSSL\lib\VC\x64\MD
   X86_64_PC_WINDOWS_MSVC_OPENSSL_INCLUDE_DIR: C:\Program Files\OpenSSL\include
   CARGO_INCREMENTAL: 0
diff --git a/.github/workflows/cron-ci.yaml b/.github/workflows/cron-ci.yaml
index cadfb65a6..2cf63a50a 100644
--- a/.github/workflows/cron-ci.yaml
+++ b/.github/workflows/cron-ci.yaml
@@ -42,7 +42,7 @@ jobs:
       - run: sudo apt-get update && sudo apt-get -y install lcov
 
       - name: Run cargo-llvm-cov with Rust tests.
-        run: cargo llvm-cov --no-report --workspace --exclude rustpython_wasm --exclude rustpython-compiler-source --exclude rustpython-venvlauncher --exclude rustpython-capi --verbose --no-default-features --features stdlib,importlib,stdio,encodings,ssl-rustls-aws-lc,jit,host_env
+        run: cargo llvm-cov --no-report --workspace --exclude rustpython_wasm --exclude rustpython-venvlauncher --exclude rustpython-capi --verbose --no-default-features --features stdlib,importlib,stdio,encodings,ssl-rustls-aws-lc,jit,host_env
 
       - name: Run cargo-llvm-cov with Python snippets.
         run: python scripts/cargo-llvm-cov.py
diff --git a/.github/workflows/update-caches.yml b/.github/workflows/update-caches.yml
index d3f5da9c1..59ff6006f 100644
--- a/.github/workflows/update-caches.yml
+++ b/.github/workflows/update-caches.yml
@@ -20,7 +20,7 @@ env:
   CARGO_PROFILE_DEV_DEBUG: 0
   CARGO_PROFILE_RELEASE_DEBUG: 0
   # Keep feature list in sync with CI's release build in .github/workflows/ci.yaml.
-  CARGO_ARGS: --workspace --no-default-features --features stdlib,importlib,stdio,encodings,sqlite,ssl-rustls-aws-lc,host_env,threading,jit --exclude rustpython_wasm --exclude rustpython-compiler-source --exclude rustpython-venvlauncher
+  CARGO_ARGS: --workspace --no-default-features --features stdlib,importlib,stdio,encodings,sqlite,ssl-rustls-aws-lc,host_env,threading,jit --exclude rustpython_wasm --exclude rustpython-venvlauncher
 
 jobs:
   build-caches:
diff --git a/Cargo.lock b/Cargo.lock
index a1d63a0fb..0cbc19fbe 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3296,14 +3296,6 @@ dependencies = [
  "rustpython-wtf8",
 ]
 
-[[package]]
-name = "rustpython-compiler-source"
-version = "0.4.1+deprecated"
-dependencies = [
- "rustpython-ruff_source_file",
- "rustpython-ruff_text_size",
-]
-
 [[package]]
 name = "rustpython-derive"
 version = "0.5.0"
diff --git a/crates/compiler-source/Cargo.toml b/crates/compiler-source/Cargo.toml
deleted file mode 100644
index cb94c1747..000000000
--- a/crates/compiler-source/Cargo.toml
+++ /dev/null
@@ -1,16 +0,0 @@
-[package]
-name = "rustpython-compiler-source"
-description = "(DEPRECATED) RustPython Source and Index"
-version = "0.4.1+deprecated"
-authors.workspace = true
-edition.workspace = true
-rust-version.workspace = true
-repository.workspace = true
-license.workspace = true
-
-[dependencies]
-ruff_source_file = { workspace = true }
-ruff_text_size = { workspace = true }
-
-[lints]
-workspace = true
diff --git a/crates/compiler-source/src/lib.rs b/crates/compiler-source/src/lib.rs
deleted file mode 100644
index e3fb55ef6..000000000
--- a/crates/compiler-source/src/lib.rs
+++ /dev/null
@@ -1,43 +0,0 @@
-pub use ruff_source_file::{LineIndex, OneIndexed as LineNumber, PositionEncoding, SourceLocation};
-use ruff_text_size::TextRange;
-pub use ruff_text_size::TextSize;
-
-#[derive(Clone)]
-pub struct SourceCode<'src> {
-    pub path: &'src str,
-    pub text: &'src str,
-    pub index: LineIndex,
-}
-
-impl<'src> SourceCode<'src> {
-    pub fn new(path: &'src str, text: &'src str) -> Self {
-        let index = LineIndex::from_source_text(text);
-        Self { path, text, index }
-    }
-
-    pub fn line_index(&self, offset: TextSize) -> LineNumber {
-        self.index.line_index(offset)
-    }
-
-    pub fn source_location(&self, offset: TextSize) -> SourceLocation {
-        self.index
-            .source_location(offset, self.text, PositionEncoding::Utf8)
-    }
-
-    pub fn get_range(&'src self, range: TextRange) -> &'src str {
-        &self.text[range.start().to_usize()..range.end().to_usize()]
-    }
-}
-
-pub struct SourceCodeOwned {
-    pub path: String,
-    pub text: String,
-    pub index: LineIndex,
-}
-
-impl SourceCodeOwned {
-    pub fn new(path: String, text: String) -> Self {
-        let index = LineIndex::from_source_text(&text);
-        Self { path, text, index }
-    }
-}
diff --git a/crates/venvlauncher/Cargo.toml b/crates/venvlauncher/Cargo.toml
index c88dc5d35..2d5d3fb70 100644
--- a/crates/venvlauncher/Cargo.toml
+++ b/crates/venvlauncher/Cargo.toml
@@ -7,6 +7,7 @@ edition.workspace = true
 rust-version.workspace = true
 repository.workspace = true
 license.workspace = true
+publish = false
 
 # Free-threaded variants (RustPython uses Py_GIL_DISABLED=true)
 [[bin]]
diff --git a/host_env_proposal.md b/host_env_proposal.md
index fd32df1ab..fdff49938 100644
--- a/host_env_proposal.md
+++ b/host_env_proposal.md
@@ -347,7 +347,7 @@ The strongest guarantee. If a crate doesn't list `rustpython-host_env` in its `[
 
 **Pure crates (no host_env dependency allowed):**
 - `rustpython-common`
-- `rustpython-compiler`, `rustpython-compiler-core`, `rustpython-compiler-source`
+- `rustpython-compiler`, `rustpython-compiler-core`
 - `rustpython-codegen`
 - `rustpython-literal`
 - `rustpython-sre_engine`
@@ -357,7 +357,7 @@ The strongest guarantee. If a crate doesn't list `rustpython-host_env` in its `[
 CI check:
 ```bash
 # Verify pure crates don't depend on host_env
-for crate in common compiler compiler-core compiler-source codegen literal sre_engine wtf8 derive derive-impl; do
+for crate in common compiler compiler-core codegen literal sre_engine wtf8 derive derive-impl; do
   if rg 'rustpython-host_env' "crates/$crate/Cargo.toml"; then
     echo "ERROR: $crate should not depend on host_env"
     exit 1
@@ -471,7 +471,6 @@ After removing host modules from `common`, it could potentially become `#![no_st
 Candidate crates for unconditional `#![no_std]`:
 - `rustpython-literal`
 - `rustpython-wtf8`
-- `rustpython-compiler-source`
 
 ### Summary of enforcement layers