feat(cli)!: Extract CLI binary into separate prqlc-cli crate

Split the prqlc crate into a pure library (prqlc) and a CLI binary
(prqlc-cli). This fixes the structural MSRV problem where CLI-only
dependencies (clap, clio, notify, etc.) forced prqlc's MSRV higher
than needed, blocking Dependabot PRs.

Key changes:
- prqlc: Remove `cli` feature, add `display` feature gating
  ariadne+anstream as optional deps. Library is now pure with no
  binary target.
- prqlc-cli: New binary crate with all CLI code moved here. Binary
  name remains `prqlc` via [[bin]] config. Depends on prqlc with
  `display` and `serde_yaml` features.
- error_message.rs: Split composed() — location always computed via
  new offset_to_line_col() helper (no ariadne needed), display
  rendering behind #[cfg(feature = "display")].
- semantic/reporting.rs: Remove dead label_references()/Labeler code.
- utils/mod.rs: Gate color functions behind `display` feature with
  no-op fallback.
- CI: Update build-prqlc action to build prqlc-cli package, upgrade
  cargo-msrv, update release features.
- Install via: cargo install prqlc-cli

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: snth

.github/actions/build-prqlc/action.yaml

@@ -76,9 +76,8 @@ runs:
         # even at the cost of slighly less efficiency.)
         args:
           --profile=${{ inputs.profile }} --locked --target=${{ inputs.target }}
-          --no-default-features --features=${{ inputs.features }} ${{
-          contains(inputs.target, 'musl') && '--package=prqlc' ||
-          '--all-targets' }}
+          --package=prqlc-cli --no-default-features --features=${{
+          inputs.features }}
 
     - name: Create artifact for Linux and macOS
       shell: bash

.github/workflows/release.yaml

@@ -68,7 +68,7 @@ jobs:
         with:
           target: ${{ matrix.target }}
           profile: release
-          features: cli
+          features: default
       - name: Upload release artifact
         if: github.event_name == 'release'
         uses: softprops/action-gh-release@v2

.github/workflows/tests.yaml

@@ -554,13 +554,10 @@ jobs:
       - uses: baptiste0928/cargo-install@v3
         with:
           crate: cargo-msrv
-          # TODO: remove this version pinning
-          # The latest 0.16 supports workspace inheritance, so the check will fail
-          version: "0.15"
         # Note this currently uses a manually maintained key in
         # `prqlc/prqlc/Cargo.toml`, because of
         # https://github.com/foresterre/cargo-msrv/issues/590
-      - name: Verify minimum rust version — prqlc
+      - name: Verify minimum rust version — prqlc library
         # Ideally we'd check all crates, ref https://github.com/foresterre/cargo-msrv/issues/295
         working-directory: prqlc/prqlc
         run: cargo msrv verify

CHANGELOG.md

@@ -16,6 +16,11 @@
 
 **Internal changes**:
 
+- Extract CLI binary into separate `prqlc-cli` crate. The `prqlc` crate is now a
+  pure library; the `cli` feature has been removed and replaced by a `display`
+  feature that gates ariadne/anstream. The CLI binary name remains `prqlc`.
+  Install with `cargo install prqlc-cli`. (@snth)
+
 **New Contributors**:
 
 ## 0.13.11 — 2026-03-19

Cargo.lock

@@ -5,6 +5,7 @@ members = [
   "prqlc/bindings/js",
   "prqlc/bindings/prqlc-c",
   "prqlc/bindings/prqlc-python",
+  "prqlc/prqlc-cli",
   "prqlc/prqlc-macros",
   "prqlc/prqlc-parser",
   "prqlc/prqlc",

Cargo.toml

@@ -143,8 +143,8 @@ To stay in touch with PRQL:
 This repo is composed of:
 
 - **[prqlc](./prqlc/)** — the compiler, written in rust, whose main role is to
-  compile PRQL into SQL. Also contains the CLI and bindings from various
-  languages.
+  compile PRQL into SQL. Also contains the [CLI](./prqlc/prqlc-cli/) and
+  bindings from various languages.
 - **[web](./web/)** — our web content: the [Book][prql book],
   [Website][prql website], and [Playground][prql playground].
 

README.md

@@ -15,7 +15,7 @@ includes:
     dir: ./bindings/prqlc-python
 
 vars:
-  packages_core: -p prqlc-parser -p prqlc
+  packages_core: -p prqlc-parser -p prqlc -p prqlc-cli
   packages_addon: -p prqlc-macros -p compile-files
   packages_bindings: -p prql -p prql-java -p prqlc-js -p prqlc-c -p prqlc-python
 

prqlc/Taskfile.yaml

@@ -0,0 +1,64 @@
+[package]
+description = "CLI for the PRQL compiler — compiles PRQL to SQL."
+name = "prqlc-cli"
+
+edition.workspace = true
+license.workspace = true
+repository.workspace = true
+version.workspace = true
+
+# No rust-version constraint — CLI can track latest deps freely.
+
+build = "build.rs"
+
+[features]
+default = ["lsp"]
+lsp = ["lsp-server", "lsp-types"]
+
+[[bin]]
+name = "prqlc"
+path = "src/main.rs"
+
+[dependencies]
+prqlc = { path = "../prqlc", features = ["display", "serde_yaml"] }
+
+anyhow = { version = "1.0.102", features = ["backtrace"] }
+anstream = { version = "1.0.0", features = ["auto"] }
+ariadne = "0.5.1"
+clap = { version = "4.5.53", features = ["derive", "env", "wrap_help"] }
+clap_complete_command = "0.5.1"
+clio = { version = "0.3.3", features = ["clap-parse"] }
+color-eyre = "0.6.5"
+colorchoice-clap = "1.0.0"
+is-terminal = "0.4.17"
+itertools = { workspace = true }
+log = { workspace = true }
+minijinja = { version = "2.18.0", features = ["unstable_machinery"] }
+notify = "7.0.0"
+regex = "1.12.3"
+schemars = { workspace = true }
+serde = { workspace = true }
+serde_json = { workspace = true }
+serde_yaml = { workspace = true }
+walkdir = "2.5.0"
+
+lsp-server = { version = "0.7.9", optional = true }
+lsp-types = { version = "0.97.0", optional = true }
+
+[build-dependencies]
+vergen-gitcl = { version = "1.0.0", features = ["build"] }
+
+[dev-dependencies]
+glob = "0.3.3"
+insta = { workspace = true }
+insta-cmd = { workspace = true }
+similar = { workspace = true }
+similar-asserts = { workspace = true }
+tempfile = "3.27.0"
+walkdir = "2.5.0"
+
+[lints.rust]
+unsafe_code = "forbid"
+
+[lints.clippy]
+result_large_err = "allow"

prqlc/prqlc-cli/Cargo.toml

@@ -0,0 +1,11 @@
+use std::error::Error;
+// gix failing on https://github.com/rustyhorde/vergen/issues/359, and `git2`
+// fails on `aarch64` so we're using `gitcl`. Switch to `gitx` when that bug is
+// fixed.
+use vergen_gitcl::{Emitter, GitclBuilder as GitBuilder};
+
+pub fn main() -> Result<(), Box<dyn Error>> {
+    let git = GitBuilder::default().describe(true, true, None).build()?;
+    Emitter::default().add_instructions(&git)?.emit()?;
+    Ok(())
+}