+github.com/dduan/tre (#418)

* +github.com/dduan/tre

a clone of unix tree(1) command written in rust

* remove tree from `provides`

tree usually refers to https://gitlab.com/OldManProgrammer/unix-tree

let's not confuse the users

* simplify tests

* update fixture

* simplify tests

because the sorting of tre output is non-stable and can't be forced, we need to get rid of verbatim fixture comparison in tests

projects/github.com/dduan/tre/package.yml

@@ -0,0 +1,36 @@
+distributable:
+  url: https://github.com/dduan/tre/archive/refs/tags/v{{ version }}.tar.gz
+  strip-components: 1
+
+provides:
+  - bin/tre
+
+versions:
+  github: dduan/tre/tags
+  strip: /v/
+
+dependencies:
+  zlib.net: ^1
+
+build:
+  dependencies:
+    rust-lang.org: '>=1.60'
+    rust-lang.org/cargo: '*'
+  script: |
+    cargo install --locked --path . --root {{prefix}}
+
+test:
+  script: |
+    # prepare for tests
+    mkdir -p foo/bar
+    mkdir -p foo/buzz
+    touch foo/buzz/lupus.txt
+
+    # run tests
+    test "$(tre --version)"='tre-command {{version}}'
+    out="$(tre . --all)"
+    echo $out | grep lupus.txt  # test for files found
+    echo $out | grep bar        # test for level 2 dirs found
+    echo $out | grep buzz       # ^
+    tre --all
+