[bug#49946] [PATCH v6 02/27] gnu: Add tree-sitter-cli.

[Pierre Langlois]

* gnu/packages/tree-sitter.scm (tree-sitter-cli): New variable.
---
 gnu/packages/tree-sitter.scm | 79 ++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)

diff --git a/gnu/packages/tree-sitter.scm b/gnu/packages/tree-sitter.scm
index 7116a10ed7..18c9fe0844 100644
--- a/gnu/packages/tree-sitter.scm
+++ b/gnu/packages/tree-sitter.scm
@@ -20,10 +20,13 @@
 (define-module (gnu packages tree-sitter)
   #:use-module (guix gexp)
   #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix build-system cargo)
   #:use-module (guix build-system gnu)
   #:use-module (guix git-download)
   #:use-module (guix packages)
   #:use-module (guix utils)
+  #:use-module (gnu packages crates-graphics)
+  #:use-module (gnu packages crates-io)
   #:use-module (gnu packages icu4c))

 (define-public tree-sitter
@@ -76,3 +79,79 @@ (define-public tree-sitter
 This package includes the @code{libtree-sitter} runtime library.
 ")
     (license license:expat)))
+
+(define-public tree-sitter-cli
+  (package (inherit tree-sitter)
+    (name "tree-sitter-cli")
+    (source (origin
+              (inherit (package-source tree-sitter))
+              (snippet
+               '(begin
+                  ;; Remove the runtime library code and dynamically link to
+                  ;; it instead.
+                  (delete-file-recursively "lib/src")
+                  (delete-file "lib/binding_rust/build.rs")
+                  (with-output-to-file "lib/binding_rust/build.rs"
+                    (lambda _
+                      (format #t "fn main() {~@
+                              println!(\"cargo:rustc-link-lib=tree-sitter\");~@
+                              }~%")))
+                  #t))))
+    (build-system cargo-build-system)
+    (inputs (list tree-sitter))
+    (arguments
+     `(;; Running test requires downloading fixtures, see the
+       ;; script/fetch-fixtures script.
+       #:tests? #f
+       ;; We're only packaging the CLI program so we do not need to install
+       ;; sources.
+       #:install-source? #f
+       #:cargo-inputs
+       (("rust-ansi-term" ,rust-ansi-term-0.12)
+        ("rust-anyhow" ,rust-anyhow-1)
+        ("rust-atty" ,rust-atty-0.2)
+        ("rust-clap" ,rust-clap-2)
+        ("rust-difference" ,rust-difference-2)
+        ("rust-html-escape" ,rust-html-escape-0.2)
+        ("rust-libloading" ,rust-libloading-0.7)
+        ("rust-rand" ,rust-rand-0.8)
+        ("rust-rustc-hash" ,rust-rustc-hash-1)
+        ("rust-semver" ,rust-semver-1)
+        ("rust-smallbitvec" ,rust-smallbitvec-2)
+        ("rust-thiserror" ,rust-thiserror-1)
+        ("rust-tiny-http" ,rust-tiny-http-0.8)
+        ("rust-toml" ,rust-toml-0.5)
+        ("rust-walkdir" ,rust-walkdir-2)
+        ("rust-webbrowser" ,rust-webbrowser-0.5)
+        ("rust-which" ,rust-which-4))
+       #:cargo-development-inputs
+       (("rust-pretty-assertions" ,rust-pretty-assertions-0.7))
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'delete-cargo.lock
+           (lambda _ (delete-file "Cargo.lock")))
+         (replace 'install
+           (lambda* (#:key outputs #:allow-other-keys)
+             (let* ((out (assoc-ref outputs "out"))
+                    (bin (string-append out "/bin"))
+                    (lib (string-append out "/lib")))
+               (mkdir-p bin)
+               (install-file "target/release/tree-sitter" bin)))))))
+    (synopsis "Incremental parsing system for programming tools")
+    (description "Tree-sitter is a parser generator tool and an incremental
+parsing library.  It can build a concrete syntax tree for a source file and
+efficiently update the syntax tree as the source file is edited.
+
+Tree-sitter aims to be:
+
+@enumerate
+@item General enough to parse any programming language.
+@item Fast enough to parse on every keystroke in a text editor.
+@item Robust enough to provide useful results even in the presence of syntax
+errors.
+@item Dependency-free so that the runtime library (which is written in pure C)
+can be embedded in any application.
+@end enumerate
+
+This package includes the @command{tree-sitter} command-line tool.")
+    (license license:expat)))
--
2.36.0