添加"dnf copr enable @spacewalkproject/spacewalk-2.10-client“时出错

Question

当试图在Fedora 31服务器上安装空间行走客户端时，我会收到此错误。

# dnf copr enable @spacewalkproject/spacewalk-2.10-client
Enabling a Copr repository. Please note that this repository is not part of the main distribution, and quality may vary.

The Fedora Project does not exercise any power over the contents of this repository beyond the rules outlined in the Copr FAQ at <https://docs.pagure.org/copr.copr/user_documentation.html#what-i-can-build-in-copr>, and packages are not held to any quality or security level. 
Please do not file bug reports about these packages in Fedora Bugzilla. In case of problems, contact the owner of this repository.

Do you really want to enable copr.fedorainfracloud.org/@spacewalkproject/spacewalk-2.10-client? [y/N]: y
Error: This repository does not have any builds yet so you cannot enable it now.

我记得能够在服务器A上安装它，但是当在服务器B上尝试相同的时候，会出现这个错误。我不知道有什么不同。

Server A $ cat /etc/os-release .
NAME=Fedora
VERSION="31 (Server Edition)"
ID=fedora
VERSION_ID=31
VERSION_CODENAME=""
PLATFORM_ID="platform:f31"
PRETTY_NAME="Fedora 31 (Server Edition)"
ANSI_COLOR="0;34"
LOGO=fedora-logo-icon
CPE_NAME="cpe:/o:fedoraproject:fedora:31"
HOME_URL="https://fedoraproject.org/"
DOCUMENTATION_URL="https://docs.fedoraproject.org/en-US/fedora/f31/system-administrators-guide/"
SUPPORT_URL="https://fedoraproject.org/wiki/Communicating_and_getting_help"
BUG_REPORT_URL="https://bugzilla.redhat.com/"
REDHAT_BUGZILLA_PRODUCT="Fedora"
REDHAT_BUGZILLA_PRODUCT_VERSION=31
REDHAT_SUPPORT_PRODUCT="Fedora"
REDHAT_SUPPORT_PRODUCT_VERSION=31
PRIVACY_POLICY_URL="https://fedoraproject.org/wiki/Legal:PrivacyPolicy"
VARIANT="Server Edition"
VARIANT_ID=server

Server B# cat /etc/os-release
NAME=Fedora
VERSION="31 (Server Edition)"
ID=fedora
VERSION_ID=31
VERSION_CODENAME=""
PLATFORM_ID="platform:f31"
PRETTY_NAME="Fedora 31 (Server Edition)"
ANSI_COLOR="0;34"
LOGO=fedora-logo-icon
CPE_NAME="cpe:/o:fedoraproject:fedora:31"
HOME_URL="https://fedoraproject.org/"
DOCUMENTATION_URL="https://docs.fedoraproject.org/en-US/fedora/f31/system-administrators-guide/"
SUPPORT_URL="https://fedoraproject.org/wiki/Communicating_and_getting_help"
BUG_REPORT_URL="https://bugzilla.redhat.com/"
REDHAT_BUGZILLA_PRODUCT="Fedora"
REDHAT_BUGZILLA_PRODUCT_VERSION=31
REDHAT_SUPPORT_PRODUCT="Fedora"
REDHAT_SUPPORT_PRODUCT_VERSION=31
PRIVACY_POLICY_URL="https://fedoraproject.org/wiki/Legal:PrivacyPolicy"
VARIANT="Server Edition"
VARIANT_ID=server

下面是我之前能够安装的系统之一：

# rhn_register --version
 rhn_register (Spacewalk Client Tools) 2.10.10-1.fc31
 Copyright (C) 1999--2014 Red Hat, Inc.
 Licensed under the terms of the GPLv2.

# cat /etc/redhat-release
 Fedora release 31 (Thirty One)

Answer 1

这是因为这个项目没有为Fedora 31提供构建。请参阅https://copr.fedorainfracloud.org/coprs/g/spacewalkproject/spacewalk-2.10-client/

你可以试着用你的运气来执行一个平台

dnf copr enable @spacewalkproject/spacewalk-2.10-client epel-8-x86_64

这将使回购成功。但是RHEL8包是否会在Fedora 31上工作还很难说。