Revert #36057 & document mingw-w64 requirement #36271

1. 
   fanquake commented at 12:36 PM on September 16, 2026: member

   A follow-up reverting #36057, now that we've branched off for 33.x. Also documents mingw-w64 requirements (#32380).

2. Revert "build: check for SetThreadDescription() at configure time"

   This reverts commit bed46bd16c2b34eec62849b96cebbbdbcdd2c1ac.

   e394ba6dae
3. 
   DrahtBot commented at 12:36 PM on September 16, 2026: contributor

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   Code Coverage & Benchmarks

   For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/36271.

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4. doc: document mingw-w64 requirement in Windows build docs 93ae95aeca
5. fanquake force-pushed on Sep 16, 2026
6. nix: drop MSVCRT build ce76c082ce
7. in depends/README.md:170 in bc63b06914

    166 | @@ -167,7 +167,6 @@ Some Ubuntu or Debian versions may not offer a working package. In this case,
    167 |  you may install `nix-bin` and use the Nix shell from the repository root:
    168 |  
    169 |      apt install nix-bin
    170 | -    NIX_BUILD_SHELL=bash HOST=x86_64-w64-mingw32 nix-shell contrib/devtools/shell-win64-cross.nix  # MSVCRT
    171 |      NIX_BUILD_SHELL=bash HOST=x86_64-w64-mingw32ucrt nix-shell contrib/devtools/shell-win64-cross.nix  # UCRT
   

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   maflcko commented at 2:01 PM on September 16, 2026:

   I think this one can be removed as well now:

   diff --git a/contrib/devtools/shell-win64-cross.nix b/contrib/devtools/shell-win64-cross.nix
   index 4fd83b0..7e0da92 100644
   --- a/contrib/devtools/shell-win64-cross.nix
   +++ b/contrib/devtools/shell-win64-cross.nix
   @@ -10,8 +10,3 @@
    let
   -  host = builtins.getEnv "HOST";
   -  crossPkgs = if host == "x86_64-w64-mingw32ucrt"
   -    then pkgs.pkgsCross.ucrt64
   -    else if host == "x86_64-w64-mingw32"
   -      then pkgs.pkgsCross.mingwW64
   -      else throw "Unsupported HOST: ${host}";
   +  crossPkgs = pkgs.pkgsCross.ucrt64;
      toolchain = crossPkgs.stdenv.cc.targetPrefix;
   diff --git a/depends/README.md b/depends/README.md
   index 3cee78a..f17bcab 100644
   --- a/depends/README.md
   +++ b/depends/README.md
   @@ -169,4 +169,3 @@ you may install `nix-bin` and use the Nix shell from the repository root:
        apt install nix-bin
   -    NIX_BUILD_SHELL=bash HOST=x86_64-w64-mingw32ucrt nix-shell contrib/devtools/shell-win64-cross.nix  # UCRT
   +    NIX_BUILD_SHELL=bash nix-shell contrib/devtools/shell-win64-cross.nix
    
   

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   fanquake commented at 2:07 PM on September 16, 2026:

   Sure, dropped.

8. fanquake force-pushed on Sep 16, 2026
9. DrahtBot added the label CI failed on Sep 16, 2026
10. DrahtBot removed the label CI failed on Sep 16, 2026
11. 
    hebasto commented at 5:07 PM on September 16, 2026: member

    Concept ACK. This follows the plan.

12. 
    ViniciusCestarii commented at 7:28 PM on September 16, 2026: contributor

    ACK ce76c082cead6a107d1c95f584a0eff390b3539f

13. DrahtBot requested review from hebasto on Sep 16, 2026

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