fdtools: pin to older skalibs version

fdtools hasn’t caught up with skalibs yet.

We also add a revdep test that alerts us in the future if a skalibs
bumb breaks fdtools again.

pkgs/build-support/skaware/build-skaware-package.nix

@@ -22,7 +22,8 @@
 , postInstall
   # : list Maintainer
 , maintainers ? []
-
+  # : passtrhu arguments (e.g. tests)
+, passthru ? {}
 
 }:
 
@@ -108,4 +109,6 @@ in stdenv.mkDerivation {
       [ pmahoney Profpatsch qyliss ] ++ maintainers;
   };
 
+  inherit passthru;
+
 }

pkgs/development/libraries/skalibs/2_10.nix

@@ -0,0 +1,31 @@
+{ skawarePackages }:
+
+skawarePackages.buildPackage {
+  pname = "skalibs";
+  version = "2.10.0.3";
+  sha256 = "0ka6n5rnxd5sn5lycarf596d5wlak5s535zqqlz0rnhdcnpb105p";
+
+  description = "A set of general-purpose C programming libraries";
+
+  outputs = [ "lib" "dev" "doc" "out" ];
+
+  configureFlags = [
+    # assume /dev/random works
+    "--enable-force-devr"
+    "--libdir=\${lib}/lib"
+    "--dynlibdir=\${lib}/lib"
+    "--includedir=\${dev}/include"
+    "--sysdepdir=\${lib}/lib/skalibs/sysdeps"
+    # Empty the default path, which would be "/usr/bin:bin".
+    # It would be set when PATH is empty. This hurts hermeticity.
+    "--with-default-path="
+  ];
+
+  postInstall = ''
+    rm -rf sysdeps.cfg
+    rm libskarnet.*
+
+    mv doc $doc/share/doc/skalibs/html
+  '';
+
+}

pkgs/development/libraries/skalibs/default.nix

@@ -1,4 +1,4 @@
-{ skawarePackages }:
+{ skawarePackages, pkgs }:
 
 with skawarePackages;
 
@@ -30,4 +30,10 @@ buildPackage {
     mv doc $doc/share/doc/skalibs/html
   '';
 
+  passthru.tests = {
+    # fdtools is one of the few non-skalib packages that depends on skalibs
+    # and might break if skalibs gets an breaking update.
+    fdtools = pkgs.fdtools;
+  };
+
 }

pkgs/tools/misc/fdtools/default.nix

@@ -2,8 +2,10 @@
 
 let
   pname = "fdtools";
+  # When you update, check whether we can drop the skalibs pin.
   version = "2020.05.04";
   sha256 = "0lnafcp4yipi0dl8gh33zjs8wlpz0mim8mwmiz9s49id0b0fmlla";
+  skalibs = skawarePackages.skalibs_2_10;
 
 in stdenv.mkDerivation {
   inherit pname version;
@@ -16,7 +18,10 @@ in stdenv.mkDerivation {
   patches = [ ./new-skalibs.patch ];
   outputs = [ "bin" "lib" "dev" "doc" "out" ];
 
-  buildInputs = [ skawarePackages.skalibs ];
+  buildInputs = [
+    # temporary, until fdtools catches up to skalibs
+    skalibs
+  ];
 
   configurePhase = ''
     cd ${pname}-${version}
@@ -27,7 +32,7 @@ in stdenv.mkDerivation {
       conf-compile/defaults/host_compile.sh \
       > conf-compile/host_compile.sh
 
-    echo "${skawarePackages.skalibs.lib}/lib/skalibs/sysdeps" \
+    echo "${skalibs.lib}/lib/skalibs/sysdeps" \
       > conf-compile/depend_skalibs_sysdeps
   '';
 

pkgs/top-level/all-packages.nix

@@ -18948,6 +18948,7 @@ with pkgs;
   skaffold = callPackage ../development/tools/skaffold { };
 
   skalibs = skawarePackages.skalibs;
+  skalibs_2_10 = skawarePackages.skalibs_2_10;
 
   skawarePackages = recurseIntoAttrs rec {
     cleanPackaging = callPackage ../build-support/skaware/clean-packaging.nix { };
@@ -18957,6 +18958,7 @@ with pkgs;
     buildManPages = callPackage ../build-support/skaware/build-skaware-man-pages.nix { };
 
     skalibs = callPackage ../development/libraries/skalibs { };
+    skalibs_2_10 = callPackage ../development/libraries/skalibs/2_10.nix { };
     execline = callPackage ../tools/misc/execline { };
 
     execline-man-pages = callPackage ../data/documentation/execline-man-pages {