treewide: use stdenv.buildPlatform.canExecute

[pbsds]

candidate for #346453

candidates were made using

old='postInstall = lib.optionalString (stdenv.hostPlatform == stdenv.buildPlatform)'
new='postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform)'
rg -F -l -- "$old" pkgs/ | xe sd -F -- "$old" "$new"

old='postInstall = lib.optionalString (stdenv.buildPlatform == stdenv.hostPlatform)'
new='postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform)'
rg -F -l -- "$old" pkgs/ | xe sd -F -- "$old" "$new"


old='doCheck = stdenv.hostPlatform == stdenv.buildPlatform;'
new='doCheck = stdenv.buildPlatform.canExecute stdenv.hostPlatform;'
rg -F -l -- "$old" pkgs/ | xe sd -F -- "$old" "$new"

old='doCheck = stdenv.buildPlatform == stdenv.hostPlatform;'
new='doCheck = stdenv.buildPlatform.canExecute stdenv.hostPlatform;'
rg -F -l -- "$old" pkgs/ | xe sd -F -- "$old" "$new"


old='doInstallCheck = stdenv.hostPlatform == stdenv.buildPlatform;'
new='doInstallCheck = stdenv.buildPlatform.canExecute stdenv.hostPlatform;'
rg -F -l -- "$old" pkgs/ | xe sd -F -- "$old" "$new"

old='doInstallCheck = stdenv.buildPlatform == stdenv.hostPlatform;'
new='doInstallCheck = stdenv.buildPlatform.canExecute stdenv.hostPlatform;'
rg -F -l -- "$old" pkgs/ | xe sd -F -- "$old" "$new"

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 24.11 Release Notes (or backporting 23.11 and 24.05 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

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[pbsds]

not sure how nixStatic got rebuilt, but the binary seems to work