checkbashisms: simplify and set platforms to unix (#25773)

- adds version to name
- also adds "unix" as platform (anything with perl should work)

pkgs/development/tools/misc/checkbashisms/default.nix

@@ -1,33 +1,26 @@
 { stdenv, fetchurl, perl }:
 stdenv.mkDerivation rec {
-  inherit perl;
-
-  name = "checkbashisms";
   version = "2.0.0.2";
+  name = "checkbashisms-${version}";
 
   src = fetchurl {
-    url = "mirror://sourceforge/project/checkbaskisms/${version}/${name}";
+    url = "mirror://sourceforge/project/checkbaskisms/${version}/checkbashisms";
     sha256 = "1vm0yykkg58ja9ianfpm3mgrpah109gj33b41kl0jmmm11zip9jd";
   };
 
+  buildInputs = [ perl ];
+
   # The link returns directly the script. No need for unpacking
   unpackPhase = "true";
 
   installPhase = ''
-    mkdir -p $out/bin
-    cp $src $out/bin/checkbashisms
-    chmod 755 $out/bin/checkbashisms
-  '';
-
-  # Makes sure to point to the proper perl version
-  fixupPhase = ''
-    sed -e "s#/usr/bin/perl#$perl/bin/perl#" -i $out/bin/checkbashisms
+    install -D -m755 $src $out/bin/checkbashisms
   '';
 
   meta = {
     homepage = http://sourceforge.net/projects/checkbaskisms/;
     description = "Check shell scripts for non-portable syntax";
     license = stdenv.lib.licenses.gpl2;
-    platforms = stdenv.lib.platforms.linux;
+    platforms = stdenv.lib.platforms.unix;
   };
 }