From 8318df5b630579a910fd2fd3ae46bdfec37d1ef4 Mon Sep 17 00:00:00 2001
From: mdarocha <git@mdarocha.pl>
Date: Sat, 30 Sep 2023 13:21:12 +0200
Subject: [PATCH 1/3] buildDotnetModule: fix running fetch-deps with no
 nugetDeps defined. This eases the initial setup when creating a package

---
 pkgs/build-support/dotnet/build-dotnet-module/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/build-support/dotnet/build-dotnet-module/default.nix b/pkgs/build-support/dotnet/build-dotnet-module/default.nix
index 686d89f8c11c..02776d57c91b 100644
--- a/pkgs/build-support/dotnet/build-dotnet-module/default.nix
+++ b/pkgs/build-support/dotnet/build-dotnet-module/default.nix
@@ -172,7 +172,7 @@ stdenvNoCC.mkDerivation (args // {
 
   passthru = {
     inherit nuget-source;
-  } // lib.optionalAttrs (nugetDepsFile != null) {
+  } // lib.optionalAttrs (!lib.isDerivation nugetDeps) {
     fetch-deps =
       let
         flags = dotnetFlags ++ dotnetRestoreFlags;

From f1cc116e3db5cff8b92ec30ec5283de966e22066 Mon Sep 17 00:00:00 2001
From: mdarocha <git@mdarocha.pl>
Date: Sat, 30 Sep 2023 13:21:36 +0200
Subject: [PATCH 2/3] buildDotnetModule: make docs more clear on how to
 generate nugetDeps for the first time

---
 doc/languages-frameworks/dotnet.section.md | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/doc/languages-frameworks/dotnet.section.md b/doc/languages-frameworks/dotnet.section.md
index 9ba0fef2a27b..978ec07cb961 100644
--- a/doc/languages-frameworks/dotnet.section.md
+++ b/doc/languages-frameworks/dotnet.section.md
@@ -138,7 +138,9 @@ in buildDotnetModule rec {
   src = ./.;
 
   projectFile = "src/project.sln";
-  nugetDeps = ./deps.nix; # File generated with `nix-build -A package.passthru.fetch-deps`.
+  # File generated with `nix-build -A package.passthru.fetch-deps`.
+  # To run fetch-deps when this file does not yet exist, set nugetDeps to null
+  nugetDeps = ./deps.nix;
 
   projectReferences = [ referencedProject ]; # `referencedProject` must contain `nupkg` in the folder structure.
 

From d016404ccd291838794c6e6c1e9ac6779cc5fa9f Mon Sep 17 00:00:00 2001
From: mdarocha <git@mdarocha.pl>
Date: Sat, 30 Sep 2023 14:27:05 +0200
Subject: [PATCH 3/3] buildDotnetModule: parse version before passing it to
 dotnet This avoids problems when the Nix version attribute does not fit the
 format required by .NET

---
 .../dotnet/build-dotnet-module/default.nix       | 16 ++++++++++++++++
 .../hooks/dotnet-build-hook.sh                   |  9 +++++++--
 2 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/pkgs/build-support/dotnet/build-dotnet-module/default.nix b/pkgs/build-support/dotnet/build-dotnet-module/default.nix
index 02776d57c91b..f8ed3a38890c 100644
--- a/pkgs/build-support/dotnet/build-dotnet-module/default.nix
+++ b/pkgs/build-support/dotnet/build-dotnet-module/default.nix
@@ -158,6 +158,22 @@ stdenvNoCC.mkDerivation (args // {
     dotnet-sdk
   ];
 
+  # Parse the version attr into a format acceptable for the Version msbuild property
+  # The actual version attr is saved in InformationalVersion, which accepts an arbitrary string
+  versionForDotnet = if !(lib.hasAttr "version" args) || args.version == null
+  then null else let
+    components = lib.pipe args.version [
+      lib.splitVersion
+      (lib.filter (x: (lib.strings.match "[0-9]+" x) != null))
+      (lib.filter (x: (lib.toInt x) < 65535)) # one version component in dotnet has to fit in 16 bits
+    ];
+  in if (lib.length components) == 0
+  then null
+  else lib.concatStringsSep "." ((lib.take 4 components)
+    ++ (if (lib.length components) < 4
+       then lib.replicate (4 - (lib.length components)) "0"
+       else [ ]));
+
   makeWrapperArgs = args.makeWrapperArgs or [ ] ++ [
     "--prefix LD_LIBRARY_PATH : ${dotnet-sdk.icu}/lib"
   ];
diff --git a/pkgs/build-support/dotnet/build-dotnet-module/hooks/dotnet-build-hook.sh b/pkgs/build-support/dotnet/build-dotnet-module/hooks/dotnet-build-hook.sh
index e9567b64cf2c..0acfeced9b16 100644
--- a/pkgs/build-support/dotnet/build-dotnet-module/hooks/dotnet-build-hook.sh
+++ b/pkgs/build-support/dotnet/build-dotnet-module/hooks/dotnet-build-hook.sh
@@ -24,8 +24,13 @@ dotnetBuildHook() {
         dotnetBuildFlags+=("-p:UseAppHost=true")
     fi
 
+    local versionFlags=()
     if [ "${version-}" ]; then
-        local -r versionFlag="-p:Version=${version-}"
+        versionFlags+=("-p:InformationalVersion=${version-}")
+    fi
+
+    if [ "${versionForDotnet-}" ]; then
+        versionFlags+=("-p:Version=${versionForDotnet-}")
     fi
 
     dotnetBuild() {
@@ -43,7 +48,7 @@ dotnetBuildHook() {
             -p:Deterministic=true \
             --configuration "@buildType@" \
             --no-restore \
-            ${versionFlag-} \
+            ${versionFlags[@]} \
             ${runtimeIdFlags[@]} \
             ${dotnetBuildFlags[@]}  \
             ${dotnetFlags[@]}