It sounds like you're having some issues with git, or your
network/filesystem. There's not really enough information here to
understand what issue you're hitting. Some things that may help:

   - Which repo command you're running
   - What git version you're using (git --version)
   - More complete output from repo -- it may be useful to limit it down to
   just blueprint to start: `repo sync build/blueprint`

when I later try to set the mobile with "lunch aosp_walleye-eng" I do get
> the error message that the concerned blueprint could not be found.
>

Yeah, trying a build when the source is incomplete is unlikely to work very
well. build/blueprint is one of the earliest projects used during a build
(along with build/make and build/soong), so it's not surprising to see a
blueprint error if that didn't sync.

 I am almost certain that I found a Google page where it is was mentioned,
> that Google will no longer maintain the blueprint Git repository.
>

The standalone github project <https://github.com/google/blueprint> is no
longer maintained, but it is still actively used within Android
<https://android.googlesource.com/platform/build/blueprint/+log/master>.

- Dan

On Tue, Jan 4, 2022 at 2:40 PM Michael Herren <[email protected]>
wrote:

>
> Hello
>
> I hope I am correct here. Since some days I am trying to build an Android
> kernel for a Pixel 2 and Nexus 5X. But so far I constantly failed.
>
> I tried several times to download AOSP. I tried to download the master and
> I also tried to create a local mirror and to then download the master from
> the local mirror. I also tried to download the corresponding branch. But
> what ever I try I do get the message  error.GitError: Cannot checkout
> platform/build/blueprint: Cannot initialize work tree for
> platform/build/blueprint
>
> when I later try to set the mobile with "lunch aosp_walleye-eng" I do get
> the error message that the concerned blueprint could not be found.
>
> I am almost certain that I found a Google page where it is was mentioned,
> that Google will no longer maintain the blueprint Git repository.
>
> Can  anyone help
>
> Kind Regards
> Michael
>
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