minimal-bootstrap: trim bzip2-static output

Install the single bzip2 binary with bunzip2 and bzcat symlinks instead of duplicate binaries, and skip unused recovery tools, headers, libraries, scripts, and man pages. The smoke test covers compression plus both decompression entry points.

Size impact against upstream/staging:

- bzip2-static closure: 0.665 MiB -> 0.159 MiB (-0.505 MiB)

Assisted-by: codex with gpt-5.5-high

pkgs/os-specific/linux/minimal-bootstrap/bzip2/static.nix

@@ -33,12 +33,28 @@ bash.runCommand "${pname}-${version}"
       gzip
     ];
 
-    passthru.tests.get-version =
-      result:
-      bash.runCommand "${pname}-get-version-${version}" { } ''
-        ${result}/bin/bzip2 --help
-        mkdir $out
-      '';
+    passthru.tests = {
+      get-version =
+        result:
+        bash.runCommand "${pname}-get-version-${version}" { } ''
+          ${result}/bin/bzip2 --help
+          mkdir $out
+        '';
+
+      compress =
+        result:
+        bash.runCommand "${pname}-compress-${version}" { } ''
+          printf 'bootstrap\n' > input
+          ${result}/bin/bzip2 -k input
+          ${result}/bin/bunzip2 -c input.bz2 > bunzip2-output
+          read -r bunzip2Output < bunzip2-output
+          test "$bunzip2Output" = bootstrap
+          ${result}/bin/bzcat input.bz2 > bzcat-output
+          read -r bzcatOutput < bzcat-output
+          test "$bzcatOutput" = bootstrap
+          mkdir $out
+        '';
+    };
 
     meta = {
       description = "High-quality data compression program";
@@ -58,12 +74,15 @@ bash.runCommand "${pname}-${version}"
       -j $NIX_BUILD_CORES \
       CC=musl-gcc \
       CFLAGS=-static \
-      bzip2 bzip2recover
+      bzip2
 
     # Install
-    make install -j $NIX_BUILD_CORES PREFIX=$out
+    mkdir -p $out/bin
+    cp bzip2 $out/bin/bzip2
+    ln -s bzip2 $out/bin/bunzip2
+    ln -s bzip2 $out/bin/bzcat
 
     # Strip
     # Ignore failures, because strip may fail on non-elf files.
-    find $out/{bin,lib} -type f -exec strip --strip-debug {} + || true
+    strip --strip-debug $out/bin/bzip2 || true
   ''

pkgs/os-specific/linux/minimal-bootstrap/default.nix

@@ -402,6 +402,7 @@ lib.makeScope
             echo ${bash-static.tests.get-version}
             echo ${binutils-static.tests.get-version}
             echo ${bzip2-static.tests.get-version}
+            echo ${bzip2-static.tests.compress}
             echo ${coreutils-static.tests.get-version}
             echo ${diffutils-static.tests.get-version}
             echo ${findutils-static.tests.get-version}