usr: cli: nix-docker-isa: riscv: able to build tmux

usr/cli/nix-docker-isa/imageFiles/root/.config/nixpkgs/overlays.nix

@@ -1,3 +1,6 @@
+#MC # nixpkgs overlays for RISC-V
+#MC
+#MC This file could be treated as a todo list of porting nixpkgs to RISC-V Linux.
 [(self: super:
 {
   bison = super.bison.overrideAttrs (old: {
@@ -18,4 +21,66 @@
   hello = super.hello.overrideAttrs (old: {
     doCheck = false;
   });
+  cmakeMinimal = super.cmakeMinimal.overrideAttrs (old: {
+    configureFlags = [
+      # https://gitlab.kitware.com/cmake/cmake/-/issues/20895
+      "LDFLAGS=-latomic"
+    ] ++ old.configureFlags;
+  });
+  cmake = super.cmake.overrideAttrs (old: {
+    configureFlags = [
+      "LDFLAGS=-latomic"
+    ] ++ old.configureFlags;
+  });
+  libuv = super.libuv.overrideAttrs (old: {
+    # hangs
+    doCheck = false;
+  });
+  libseccomp = super.libseccomp.overrideAttrs (old: {
+    # failed
+    doCheck = false;
+  });
+  #MC My attempt of overlaying psutil in llvm:
+  #MC
+  #MC Overlay below is not work currently, due to llvmPackages and python3Packages cannot be esaily override.
+  #MC The best way could be patch the nixpkgs source code.
+  #MC
+  #MC ```nix
+  #MC llvmPackages = super.llvmPackages.overrideDerivation (oldllvmPackages: rec {
+  #MC   libllvm = oldllvmPackages.libllvm.overrideAttrs (old: {
+  #MC     # psutil check failed
+  #MC     doCheck = false;
+  #MC   });
+  #MC   llvm = libllvm;
+  #MC   llvm-manpages = super.lowPrio (libllvm.override {
+  #MC     enableManpages = true;
+  #MC     python3 = super.python3;  # don't use python-boot
+  #MC   });
+  #MC });
+  #MC python3Packages = super.python3Packages.overrideScope (final: prev: {
+  #MC   psutil = prev.psutil.overrideAttrs (old: {
+  #MC     # failed
+  #MC     doInstallCheck = false;
+  #MC   });
+  #MC });
+  #MC ```
+  #MC
+  #MC To bypass the doInstallCheck of psutil (libbpf -> libllvm -> python3Packages.psutil),
+  #MC I disable the libpbf support in systemd as below.
+  systemd = super.systemd.override {
+    withLibBPF = false;
+  };
+  e2fsprogs = super.e2fsprogs.overrideAttrs (old: {
+    # failed
+    doCheck = false;
+  });
+  libarchive = super.libarchive.overrideAttrs (old: {
+    # failed
+    doCheck = false;
+  });
+  elfutils = super.elfutils.overrideAttrs (old: {
+    # failed
+    doCheck = false;
+    doInstallCheck = false;
+  });
 })]