From 8e103f6aafef0bc1fd2470c8b3268ca6ee1975c9 Mon Sep 17 00:00:00 2001
From: Fabio Valentini <decathorpe@gmail.com>
Date: Nov 13 2020 10:04:27 +0000
Subject: rust2rpm: allow removing unwanted features


Also, don't "echo" BuildRequires, this is very weird.

---

diff --git a/README.md b/README.md
index 22b4b30..fa94ddb 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,9 @@ Some simple example would be better than many words ;)
 
 ```ini
 [DEFAULT]
+unwanted-features =
+  compiler_builtins
+  rustc-dep-of-std
 buildrequires =
   pkgconfig(foo) >= 1.2.3
 lib.requires =
diff --git a/rust2rpm/templates/main.spec b/rust2rpm/templates/main.spec
index c5686d3..71d1ffe 100644
--- a/rust2rpm/templates/main.spec
+++ b/rust2rpm/templates/main.spec
@@ -50,6 +50,9 @@ BuildArch:      noarch
 {% endif %}
 
 BuildRequires:  rust-packaging
+{% for req in to_list(distconf.get("buildrequires"))|sort %}
+BuildRequires:  {{ req }}
+{% endfor %}
 {% if all_features %}
   {% set cargo_args = " -a" %}
 {% endif %}
@@ -74,9 +77,6 @@ BuildRequires:  {{ req }}
     {% endfor %}
 %endif
   {% endif %}
-  {% for req in to_list(distconf.get("buildrequires"))|sort %}
-BuildRequires:  {{ req }}
-  {% endfor %}
   {% if has_buildrequires and not only_main %}
 %endif
   {% endif %}
@@ -130,6 +130,9 @@ Requires:       {{ req }}
   {% set features = features|sort %}
   {% do features.insert(0, None) %}
   {% do features.insert(1, "default") %}
+  {% for unwanted in to_list(distconf.get("unwanted-features")) %}
+    {% do features.remove(unwanted) %}
+  {% endfor %}
   {% for feature in features %}
     {% if feature is none %}
       {% set pkg = "   devel" %}
@@ -189,9 +192,6 @@ which use {% if feature is not none %}"{{ feature }}" feature of {% endif %}"%{c
 {% if generate_buildrequires %}
 %generate_buildrequires
 %cargo_generate_buildrequires{{ cargo_args }}
-  {% for req in to_list(distconf.get("buildrequires"))|sort %}
-echo {{ "%r"|format(req) }}
-  {% endfor %}
 
 {% endif -%}