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76 lines
3.2 KiB
Markdown
76 lines
3.2 KiB
Markdown
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# Dotnet
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## Local Development Workflow
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For local development, it's recommended to use nix-shell to create a dotnet environment:
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```
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# shell.nix
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with import <nixpkgs> {};
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mkShell {
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name = "dotnet-env";
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buildInputs = [
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dotnet-sdk_3
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];
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}
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```
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### Using many sdks in a workflow
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It's very likely that more than one sdk will be needed on a given project. Dotnet provides several different frameworks (E.g dotnetcore, aspnetcore, etc.) as well as many versions for a given framework. Normally, dotnet is able to fetch a framework and install it relative to the executable. However, this would mean writing to the nix store in nixpkgs, which is read-only. To support the many-sdk use case, one can compose an environment using `dotnetCorePackages.combinePackages`:
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```
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with import <nixpkgs> {};
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mkShell {
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name = "dotnet-env";
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buildInputs = [
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(with dotnetCorePackages; combinePackages [
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sdk_3_1
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sdk_3_0
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sdk_2_1
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])
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];
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}
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```
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This will produce a dotnet installation that has the dotnet 3.1, 3.0, and 2.1 sdk. The first sdk listed will have it's cli utility present in the resulting environment. Example info output:
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```
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$ dotnet --info
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.NET Core SDK (reflecting any global.json):
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Version: 3.1.101
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Commit: b377529961
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...
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.NET Core SDKs installed:
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2.1.803 [/nix/store/iiv98i2jdi226dgh4jzkkj2ww7f8jgpd-dotnet-core-combined/sdk]
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3.0.102 [/nix/store/iiv98i2jdi226dgh4jzkkj2ww7f8jgpd-dotnet-core-combined/sdk]
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3.1.101 [/nix/store/iiv98i2jdi226dgh4jzkkj2ww7f8jgpd-dotnet-core-combined/sdk]
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.NET Core runtimes installed:
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Microsoft.AspNetCore.All 2.1.15 [/nix/store/iiv98i2jdi226dgh4jzkkj2ww7f8jgpd-dotnet-core-combined/shared/Microsoft.AspNetCore.All]
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Microsoft.AspNetCore.App 2.1.15 [/nix/store/iiv98i2jdi226dgh4jzkkj2ww7f8jgpd-dotnet-core-combined/shared/Microsoft.AspNetCore.App]
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Microsoft.AspNetCore.App 3.0.2 [/nix/store/iiv98i2jdi226dgh4jzkkj2ww7f8jgpd-dotnet-core-combined/shared/Microsoft.AspNetCore.App]
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Microsoft.AspNetCore.App 3.1.1 [/nix/store/iiv98i2jdi226dgh4jzkkj2ww7f8jgpd-dotnet-core-combined/shared/Microsoft.AspNetCore.App]
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Microsoft.NETCore.App 2.1.15 [/nix/store/iiv98i2jdi226dgh4jzkkj2ww7f8jgpd-dotnet-core-combined/shared/Microsoft.NETCore.App]
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Microsoft.NETCore.App 3.0.2 [/nix/store/iiv98i2jdi226dgh4jzkkj2ww7f8jgpd-dotnet-core-combined/shared/Microsoft.NETCore.App]
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Microsoft.NETCore.App 3.1.1 [/nix/store/iiv98i2jdi226dgh4jzkkj2ww7f8jgpd-dotnet-core-combined/shared/Microsoft.NETCore.App]
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```
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## dotnet-sdk vs dotnetCorePackages.sdk
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The `dotnetCorePackages.sdk_X_Y` is preferred over the old dotnet-sdk as both major and minor version are very important for a dotnet environment. If a given minor version isn't present (or was changed), then this will likely break your ability to build a project.
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## dotnetCorePackages.sdk vs dotnetCorePackages.netcore vs dotnetCorePackages.aspnetcore
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The `dotnetCorePackages.sdk` contains both a runtime and the full sdk of a given version. The `netcore` and `aspnetcore` packages are meant to serve as minimal runtimes to deploy alongside already built applications.
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## Packaging a Dotnet Application
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Ideally, we would like to build against the sdk, then only have the dotnet runtime available in the runtime closure.
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TODO: Create closure-friendly way to package dotnet applications
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