Maciej Barć <xgqt@gentoo.org> writes:

> Bug: https://bugs.gentoo.org/900597
> Bug: https://github.com/gentoo/gentoo/pull/29309
> Signed-off-by: Maciej Barć <xgqt@gentoo.org>
> ---
>  eclass/dotnet-pkg.eclass | 249 +++++++++++++++++++++++++++++++++++++++
>  1 file changed, 249 insertions(+)
>  create mode 100644 eclass/dotnet-pkg.eclass
>
> diff --git a/eclass/dotnet-pkg.eclass b/eclass/dotnet-pkg.eclass
> new file mode 100644
> index 0000000000..2b711467f5
> --- /dev/null
> +++ b/eclass/dotnet-pkg.eclass
> @@ -0,0 +1,249 @@
> +# Copyright 1999-2023 Gentoo Authors
> +# Distributed under the terms of the GNU General Public License v2
> +
> +# @ECLASS: dotnet-pkg.eclass
> +# @MAINTAINER:
> +# Gentoo Dotnet project <dotnet@gentoo.org>
> +# @AUTHOR:
> +# Anna Figueiredo Gomes <navi@vlhl.dev>
> +# Maciej Barć <xgqt@gentoo.org>
> +# @SUPPORTED_EAPIS: 7 8
> +# @PROVIDES: dotnet-pkg-utils nuget
> +# @BLURB: common functions and variables for .NET packages
> +# @DESCRIPTION:
> +# This eclass is designed to help with building and installing packages that
> +# use the .NET SDK.
> +#
> +# .NET SDK is a open-source framework from Microsoft, it is a cross-platform
> +# successor to .NET Framework.
> +#
> +# .NET packages require proper inspection before packaging:
> +# - the compatible .NET SDK version has to be declared,
> +#   this can be done by inspecting the package's "*proj" files,
> +#   unlike JAVA, .NET packages tend to lock onto one selected .NET SDK
> +#   version, so building with other .NET versions will be mostly unsupported,
> +# - nugets, which are similar to JAVA's JARs (package .NET dependencies),
> +#   have to be listed using either the "NUGETS" variable or bundled inside
> +#   a "prebuilt" archive, in second case also the "NUGET_PACKAGES" variable
> +#   has to be explicitly set.
> +# - the main project file (.*proj) that builds the project has to be specified
> +#   by the "DOTNET_PROJECT" variable.
> +
> +case "${EAPI}" in
> +	7 | 8 )
> +		:
> +		;;
> +	* )
> +		die "${ECLASS}: EAPI ${EAPI} unsupported."
> +		;;
> +esac
> +
> +if [[ -z ${_DOTNET_PKG_ECLASS} ]] ; then
> +_DOTNET_PKG_ECLASS=1
> +
> +inherit dotnet-pkg-utils
> +
> +# @ECLASS_VARIABLE: DOTNET_PROJECTS
> +# @DEFAULT_UNSET
> +# @DESCRIPTION:
> +# Path to the main .NET project files (".csproj", ".fsproj", ".vbproj")
> +# used by default by "dotnet-pkg_src_compile" phase function.
> +#
> +# In .NET version 6.0 and lower it was possible to build a project solution
> +# (".sln") immediately with output to a specified directory ("--output DIR"),
> +# but versions >= 7.0 deprecated this behavior. This means that
> +# "dotnet-pkg-utils_build" will fail when pointed to a solution or a directory
> +# containing a solution file.
> +#
> +# It is up to the maintainer if this variable is set before inheriting
> +# "dotnet-pkg-utils" eclass, but it is advised that it is set after
> +# the variable "${S}" is set, it should also integrate with it
> +# (see the example below).
> +#
> +# Example:
> +# @CODE
> +# SRC_URI="..."
> +# S="${S}"/src
> +#
> +# LICENSE="MIT"
> +# SLOT="0"
> +# KEYWORDS="~amd64"
> +#
> +# DOTNET_PROJECTS=( "${S}/DotnetProject" )
> +#
> +# src_prepare() {
> +#     ...
> +# @CODE
> +
> +# @ECLASS_VARIABLE: DOTNET_RESTORE_EXTRA_ARGS
> +# @DESCRIPTION:
> +# Extra arguments to pass to the package restore, in the "src_configure" phase.
> +#
> +# This is passed only when restoring the specified "DOTNET_PROJECT".
> +# Other project restorers do not use this variable.
> +#
> +# It is up to the maintainer if this variable is set before inheriting
> +# "dotnet-pkg.eclass", but it is advised that it is set after the variable
> +# "DOTNET_PROJECT" (from "dotnet-pkg-utils" eclass) is set.
> +#
> +# Default value is an empty array.
> +#
> +# For more info see the "DOTNET_PROJECT" variable and "dotnet-pkg_src_configure".
> +DOTNET_RESTORE_EXTRA_ARGS=()
> +
> +# @ECLASS_VARIABLE: DOTNET_BUILD_EXTRA_ARGS
> +# @DESCRIPTION:
> +# Extra arguments to pass to the package build, in the "src_compile" phase.
> +#
> +# This is passed only when building the specified "DOTNET_PROJECT".
> +# Other project builds do not use this variable.
> +#
> +# It is up to the maintainer if this variable is set before inheriting
> +# "dotnet-pkg.eclass", but it is advised that it is set after the variable
> +# "DOTNET_PROJECT" (from "dotnet-pkg-utils" eclass) is set.
> +#
> +# Default value is an empty array.
> +#
> +# Example:
> +# @CODE
> +# DOTNET_BUILD_EXTRA_ARGS=( -p:WarningLevel=0 )
> +# @CODE
> +#
> +# For more info see the "DOTNET_PROJECT" variable and "dotnet-pkg_src_compile".
> +DOTNET_BUILD_EXTRA_ARGS=()
> +
> +# @FUNCTION: dotnet-pkg_pkg_setup
> +# @DESCRIPTION:
> +# Default "pkg_setup" for the "dotnet-pkg" eclass.
> +# Pre-build configuration and checks.
> +#
> +# Calls "dotnet-pkg-utils_pkg_setup".
> +dotnet-pkg_pkg_setup() {
> +	dotnet-pkg-utils_setup
> +}
> +
> +# @FUNCTION: dotnet-pkg_src_unpack
> +# @DESCRIPTION:
> +# Default "src_unpack" for the "dotnet-pkg" eclass.
> +# Unpack the package sources.
> +#
> +# Includes a special exception for nugets (".nupkg" files) - they are instead
> +# copied into the "NUGET_PACKAGES" directory.
> +dotnet-pkg_src_unpack() {
> +	nuget_link-system-nugets
> +
> +	local archive
> +	for archive in ${A} ; do
> +		case ${archive} in
> +			*.nupkg )
> +				nuget_link "${DISTDIR}"/${archive}
> +				;;
> +			* )
> +				unpack ${archive}
> +				;;
> +		esac
> +	done
> +}
> +
> +# @FUNCTION: dotnet-pkg_src_prepare
> +# @DESCRIPTION:
> +# Default "src_prepare" for the "dotnet-pkg" eclass.
> +# Prepare the package sources.
> +#
> +# Run "dotnet-pkg-utils_remove-global-json".
> +dotnet-pkg_src_prepare() {
> +	dotnet-pkg-utils_remove-global-json
> +
> +	default
> +}
> +
> +# @FUNCTION: dotnet-pkg_foreach-project
> +# @USAGE: <args> ...
> +# @DESCRIPTION:
> +# Run a specified command for each project listed inside the "DOTNET_PROJECTS"
> +# variable.
> +#
> +# Used by "dotnet-pkg_src_configure" and "dotnet-pkg_src_compile".
> +dotnet-pkg_foreach-project() {
> +	debug-print-function ${FUNCNAME} "${@}"
> +
> +	local dotnet_project
> +	for dotnet_project in "${DOTNET_PROJECTS[@]}" ; do
> +		einfo "Running \"${@}\" for project: \"$(basename "${dotnet_project}")\""
> +		"${@}" "${dotnet_project}"

No die?

> +	done
> +}
> +
> +# @FUNCTION: dotnet-pkg_src_configure
> +# @DESCRIPTION:
> +# Default "src_configure" for the "dotnet-pkg" eclass.
> +# Configure the package.
> +#
> +# First show information about current .NET SDK that is being used,
> +# then restore the project file specified by "DOTNET_PROJECT",
> +# afterwards restore any found solutions.
> +dotnet-pkg_src_configure() {
> +	dotnet-pkg-utils_info
> +
> +	dotnet-pkg_foreach-project \
> +		dotnet-pkg-utils_restore "${DOTNET_RESTORE_EXTRA_ARGS[@]}"
> +
> +	dotnet-pkg-utils_foreach-solution dotnet-pkg-utils_restore "$(pwd)"
> +}
> +
> +# @FUNCTION: dotnet-pkg_src_compile
> +# @DESCRIPTION:
> +# Default "src_compile" for the "dotnet-pkg" eclass.
> +# Build the package.
> +#
> +# Build the package using "dotnet build" in the directory specified by either
> +# "DOTNET_PROJECT" or "S" (temporary build directory) variables.
> +#
> +# For more info see: "DOTNET_PROJECT" variable
> +# and "dotnet-pkg-utils_get-project" function.
> +dotnet-pkg_src_compile() {
> +	dotnet-pkg_foreach-project \
> +		dotnet-pkg-utils_build "${DOTNET_BUILD_EXTRA_ARGS[@]}"
> +}
> +
> +# @FUNCTION: dotnet-pkg_src_test
> +# @DESCRIPTION:
> +# Default "src_test" for the "dotnet-pkg" eclass.
> +# Test the package.
> +#
> +# Test the package by testing any found solutions.
> +#
> +# It is very likely that this function will either not execute any tests or
> +# will execute wrong or incomplete test suite. Maintainers should inspect if
> +# any and/or correct tests are ran.
> +dotnet-pkg_src_test() {
> +	dotnet-pkg-utils_foreach-solution dotnet-pkg-utils_test "$(pwd)"
> +}
> +
> +# @FUNCTION: dotnet-pkg_src_install
> +# @DESCRIPTION:
> +# Default "src_install" for the "dotnet-pkg" eclass.
> +# Install the package.
> +#
> +# This is the default package install function for the "dotnet-pkg" eclass.
> +#
> +# It is very likely that this function is either insufficient or has to be
> +# redefined in a ebuild.
> +dotnet-pkg_src_install() {
> +	# Install the compiled .NET package artifacts,
> +	# for more info see "dotnet-pkg-utils_install" and "DOTNET_OUTPUT".
> +	dotnet-pkg-utils_install
> +
> +	# Create launcher from the .NET package directory to "/usr/bin".
> +	# For example: /usr/bin/Nake -> /usr/share/nake-3.0.0/Nake
> +	dotnet-pkg-utils_dolauncher /usr/share/${P}/${PN^}
> +
> +	# Create a compatibility symlink and also for ease of use from CLI.
> +	dosym -r /usr/bin/${PN^} /usr/bin/${PN}
> +
> +	einstalldocs
> +}
> +
> +EXPORT_FUNCTIONS pkg_setup src_unpack src_prepare src_configure src_compile src_test src_install
> +
> +fi