id: add note about conditional compiling to README section

.github/workflows/CICD.yml

@@ -14,7 +14,7 @@ env:
   PROJECT_DESC: "Core universal (cross-platform) utilities"
   PROJECT_AUTH: "uutils"
   RUST_MIN_SRV: "1.51.0" ## MSRV v1.51.0
-  RUST_COV_SRV: "2020-07-01" ## (~v1.47.0) supported rust version for code coverage; (date required/used by 'coverage') ## !maint: refactor when code coverage support is included in the stable channel
+  RUST_COV_SRV: "2020-08-01" ## (~v1.47.0) supported rust version for code coverage; (date required/used by 'coverage') ## !maint: refactor when code coverage support is included in the stable channel
 
 on: [push, pull_request]
 
@@ -275,9 +275,6 @@ jobs:
         case '${{ matrix.job.os }}' in
           macos-latest) brew install coreutils ;; # needed for testing
         esac
-        case '${{ matrix.job.features }}' in
-          feat_selinux) sudo apt-get -y update ; sudo apt-get -y install libselinux1-dev ;; # TODO: is here the right place for this?
-        esac
     - name: Initialize workflow variables
       id: vars
       shell: bash

.github/workflows/GnuTests.yml

@@ -48,14 +48,7 @@ jobs:
     - name: Run GNU tests
       shell: bash
       run: |
-        # bash uutils/util/run-gnu-test.sh # TODO: revert after testing
-          bash uutils/util/run-gnu-test.sh tests/id/context.sh
-          bash uutils/util/run-gnu-test.sh tests/id/no-context.sh
-          bash uutils/util/run-gnu-test.sh tests/id/smack.sh
-          bash uutils/util/run-gnu-test.sh tests/id/uid.sh
-          bash uutils/util/run-gnu-test.sh tests/id/setgid.sh
-          bash uutils/util/run-gnu-test.sh tests/id/zero.sh
-          bash uutils/util/run-gnu-test.sh tests/id/gnu-zero-uids.sh
+        bash uutils/util/run-gnu-test.sh
     - name: Extract testing info
       shell: bash
       run: |

Cargo.toml

@@ -138,6 +138,11 @@ feat_os_unix_musl = [
     #
     "feat_require_unix",
 ]
+# "feat_selinux" == set of utilities providing support for SELinux Security Context if enabled with `--features feat_selinux`.
+# NOTE:
+# The selinux(-sys) crate requires `libselinux` headers and shared library to be accessible in the C toolchain at compile time.
+# Running a uutils compiled with `feat_selinux` requires an SELinux enabled Kernel at run time.
+feat_selinux = ["id/selinux", "selinux"]
 ## feature sets with requirements (restricting cross-platform availability)
 #
 # ** NOTE: these `feat_require_...` sets should be minimized as much as possible to encourage cross-platform availability of utilities
@@ -146,7 +151,6 @@ feat_os_unix_musl = [
 feat_require_crate_cpp = [
     "stdbuf",
 ]
-feat_selinux = ["id/selinux", "selinux"]
 # "feat_require_unix" == set of utilities requiring support which is only available on unix platforms (as of 2020-04-23)
 feat_require_unix = [
     "chgrp",

src/uu/id/src/id.rs

@@ -5,7 +5,10 @@
 //
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.
-//
+
+// spell-checker:ignore (ToDO) asid auditid auditinfo auid cstr egid emod euid getaudit getlogin gflag nflag pline rflag termid uflag gsflag zflag cflag
+
+// README:
 // This was originally based on BSD's `id`
 // (noticeable in functionality, usage text, options text, etc.)
 // and synced with:
@@ -25,8 +28,10 @@
 //
 // * Help text based on BSD's `id` manpage and GNU's `id` manpage.
 //
-
-// spell-checker:ignore (ToDO) asid auditid auditinfo auid cstr egid emod euid getaudit getlogin gflag nflag pline rflag termid uflag gsflag zflag cflag
+// * This passes GNU's coreutils Test suite (8.32) for "tests/id/context.sh" if compiled with
+//   `--features feat_selinux`. It should also pass "tests/id/no-context.sh", but that depends on
+//   `uu_ls -Z` being implemented and therefore fails at the moment
+//
 
 #![allow(non_camel_case_types)]
 #![allow(dead_code)]