add guix package

Cargo.toml

@@ -12,13 +12,13 @@ path = "src/main.rs"
 
 [dependencies]
 caps = "0.5.5"
-clap = { version = "4.5.2", features = ["derive"] }
+clap = { version = "~4.4.7", features = ["derive"] }
 color-eyre = "0.6.2"
-eyre = "0.6.12"
-libc = "0.2.153"
-nix = { version = "0.28.0", features = ["fs", "feature", "sched", "user", "mount", "mman"] }
-owo-colors = "4.0.0"
+eyre = "0.6.8"
+libc = "0.2.148"
+nix = { version = "0.27.0", features = ["fs", "feature", "sched", "user", "mount", "mman"] }
+owo-colors = "3.0.0"
 rand = "0.8.5"
-time = { version = "0.3.34", features = ["formatting"] }
-tracing = "0.1.40"
-tracing-subscriber = { version = "0.3.18", features = ["env-filter"] }
+time = { version = "0.3.28", features = ["formatting"] }
+tracing = "0.1.38"
+tracing-subscriber = { version = "0.3.17", features = ["env-filter"] }

hover-rs.scm

@@ -0,0 +1,41 @@
+(define-module (hover-rs)
+  #:use-module (guix build-system cargo)
+  #:use-module (guix gexp)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix packages)
+  #:use-module (guix git-download)
+  #:use-module (guix utils)
+  #:use-module (gnu packages crates-io))
+
+(define vcs-file?
+  (or (git-predicate (current-source-directory))
+      (const #t)))
+
+(define local-source
+  (local-file "." "source"
+              #:recursive? #t
+              #:select? (git-predicate (current-source-directory))))
+
+(define-public hover-rs
+  (package
+    (name "hover-rs")
+    (version "0.1.0")
+    (source local-source)
+    (build-system cargo-build-system)
+    (arguments
+      `(#:cargo-inputs
+        (("rust-nix" ,rust-nix-0.27)
+         ("rust-caps" ,rust-caps-0.5)
+         ("rust-clap" ,rust-clap-4)
+         ("rust-color-eyre" ,rust-color-eyre-0.6)
+         ("rust-eyre" ,rust-eyre-0.6)
+         ("rust-libc" ,rust-libc-0.2)
+         ("rust-owo-colors" ,rust-owo-colors-3)
+         ("rust-rand" ,rust-rand-0.8)
+         ("rust-time" ,rust-time-0.3)
+         ("rust-tracing" ,rust-tracing-0.1)
+         ("rust-tracing-subscriber" ,rust-tracing-subscriber-0.3))))
+    (home-page "")
+    (synopsis "")
+    (description "")
+    (license license:expat)))

src/main.rs

@@ -24,8 +24,9 @@ use std::{os::unix::process::CommandExt, path::PathBuf};
 use tracing::{debug, error};
 
 #[derive(Debug, clap::Parser)]
+/// hover-rs: protective home overlay
 struct Args {
-    // #[arg(last = true)]
+    /// Command and arguments to execute
     #[arg(trailing_var_arg = true)]
     command: Vec<String>,
 }