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-rw-r--r--pkgs/development/coq-modules/mathcomp/extra.nix539
1 files changed, 354 insertions, 185 deletions
diff --git a/pkgs/development/coq-modules/mathcomp/extra.nix b/pkgs/development/coq-modules/mathcomp/extra.nix
index 2df9cbe58c72..d37608658b4f 100644
--- a/pkgs/development/coq-modules/mathcomp/extra.nix
+++ b/pkgs/development/coq-modules/mathcomp/extra.nix
@@ -1,202 +1,371 @@
-{ stdenv, fetchFromGitHub, coq, ssreflect, coqPackages,
-  recurseIntoAttrs }:
+##########################################################
+# Main derivation:                                       #
+#   mathcomp-finmap mathcomp-analysis mathcomp-bigenough #
+#   mathcomp-multinomials mathcomp-real-closed coqeal    #
+# Additionally:                                          #
+#   mathcomp-extra-all  contains all the extra packages  #
+#   mathcomp-extra-fast contains the one not marked slow #
+########################################################################
+# This file mainly provides the above derivations, which are packages  #
+# extra mathcomp libraries based on mathcomp.                          #
+########################################################################
+
+#####################################################
+# Compiling customs versions using `mathcomp-extra` #
+##############################################################################
+# The prefered way to compile a custom version of mathcomp extra packages    #
+# (other than released versions which should be added to                     #
+# `rec-mathcomp-extra-config` and pushed to nixpkgs, see below),             #
+# is to use `coqPackages.mathcomp-extra name version` where                  #
+# 1. `name` is a string representing the name of a declared package          #
+#    OR undeclared package.                                                  #
+# 2. `version` is either:                                                    #
+# - a string without slash, which is interpreted as a github revision,       #
+#   i.e. either a tag, a branch or a commit hash                             #
+# - a string with slashes "owner/p_1/.../p_n", which is interpreted as       #
+#   github owner "owner" and revision "p_1/.../p_n".                         #
+# - a path which is interpreted as a local source for the repository,        #
+#   the name of the version is taken to be the basename of the path          #
+#   i.e. if the path is /home/you/git/package/branch/,                       #
+#        then "branch" is the name of the version                            #
+# - an attribute set which overrides some attributes (e.g. the src)          #
+#   if the version is updated, the name is automatically regenerated using   #
+#   the conventional schema "coq${coq.coq-version}-${pkgname}-${version}"    #
+# - a "standard" override function (old: new_attrs) to override the default  #
+#   attribute set, so that you can use old.${field} to patch the derivation. #
+#                                                                            #
+# Should you choose to use `pkg.overrideAttrs` instead, we provide the       #
+# function mathcomp-extra-override which takes a name and a version exactly  #
+# as above and returns an override function.                                 #
+##############################################################################
+
+#########################################################################
+# Example of use: https://github.com/math-comp/math-comp/wiki/Using-nix #
+#########################################################################
+
+###########################################
+# Adding a new package or package version #
+################################################################################
+# 1. Update or add a `package` entry to `initial`, it must be a function       #
+#    taking the version as argument and returning an attribute set. Everything #
+#    is optional and the default for the sources of the repository and the     #
+#    homepage will be https://github.com/math-comp/${package}.                 #
+#                                                                              #
+# 2. Update or add a `package` entry to `sha256` for each release.             #
+#    You may use                                                               #
+#    ```sh                                                                     #
+#    nix-prefetch-url --unpack                                                 #
+#    https://github.com/math-comp/math-comp/archive/version.tar.gz             #
+#    ```                                                                       #
+#                                                                              #
+# 3. Update or create a new consistent set of extra packages.                  #
+#    /!\ They must all be co-compatible. /!\                                   #
+#    Do not use versions that may disappear: it must either be                 #
+#    - a tag from the main repository (e.g. version or tag), or                #
+#    - a revision hash that has been *merged in master*                        #
+################################################################################
+
+{ stdenv, fetchFromGitHub, recurseIntoAttrs,
+  which, mathcomp, coqPackages,
+  mathcomp-extra-config, mathcomp-extra-override,
+  mathcomp-extra, current-mathcomp-extra,
+}:
 with builtins // stdenv.lib;
-let current-ssreflect = ssreflect; in
 let
-# configuring packages
-param = {
-  finmap = {
-    version-sha256 = {
-      "1.2.1" = "0jryb5dq8js3imbmwrxignlk5zh8gwfb1wr4b1s7jbwz410vp7zf";
-      "1.2.0" = "0b6wrdr0d7rcnv86s37zm80540jl2wmiyf39ih7mw3dlwli2cyj4";
-      "1.1.0" = "05df59v3na8jhpsfp7hq3niam6asgcaipg2wngnzxzqnl86srp2a";
-      "1.0.0" = "0sah7k9qm8sw17cgd02f0x84hki8vj8kdz7h15i7rmz08rj0whpa";
-    };
-    description = "A finset and finmap library";
-  };
-  bigenough = {
-    version-sha256 = {"1.0.0" = "10g0gp3hk7wri7lijkrqna263346wwf6a3hbd4qr9gn8hmsx70wg";};
-    description = "A small library to do epsilon - N reasonning";
-  };
-  multinomials = {
-    version-sha256 = {
-      "1.3" = "0l3vi5n094nx3qmy66hsv867fnqm196r8v605kpk24gl0aa57wh4";
-      "1.2" = "1mh1w339dslgv4f810xr1b8v2w7rpx6fgk9pz96q0fyq49fw2xcq";
-      "1.1" = "1q8alsm89wkc0lhcvxlyn0pd8rbl2nnxg81zyrabpz610qqjqc3s";
-      "1.0" = "1qmbxp1h81cy3imh627pznmng0kvv37k4hrwi2faa101s6bcx55m";
-    };
-    description = "A Coq/SSReflect Library for Monoidal Rings and Multinomials";
-  };
- analysis = {
-    version-sha256 = {
-      "0.2.2" = "1d5dwg9di2ppdzfg21zr0a691zigb5kz0lcw263jpyli1nrq7cvk";
-      "0.2.0" = "1186xjxgns4ns1szyi931964bjm0mp126qzlv10mkqqgfw07nhrd";
-      "0.1.0" = "0hwkr2wzy710pcyh274fcarzdx8sv8myp16pv0vq5978nmih46al";
-    };
-    compatibleCoqVersions = flip elem ["8.8" "8.9"];
-    description = "Analysis library compatible with Mathematical Components";
-    license = stdenv.lib.licenses.cecill-c;
-  };
-  real-closed = {
-    version-sha256 = {
-      "1.0.3" = "1xbzkzqgw5p42dx1liy6wy8lzdk39zwd6j14fwvv5735k660z7yb";
-      "1.0.2" = "0097pafwlmzd0gyfs31bxpi1ih04i72nxhn99r93aj20mn7mcsgl";
-      "1.0.1" = "0j81gkjbza5vg89v4n9z598mfdbql416963rj4b8fzm7dp2r4rxg";
-    };
-    description = "Mathematical Components Library on real closed fields";
-  };
-  coqeal = {
-    version-sha256 = {
-      "1.0.0" = "1had6f1n85lmh9x31avbmgl3m0rsiw9f8ma95qzk5b57fjg5k1ii";
-    };
-    description = "CoqEAL - The Coq Effective Algebra Library";
-    owner = "CoqEAL";
-    compatibleCoqVersions = flip elem ["8.7" "8.8" "8.9"];
-    license = stdenv.lib.licenses.mit;
-  };
-};
-versions = {
-  "1.9.0" = {
-    finmap.version = "1.2.1";
-    bigenough.version = "1.0.0";
-    analysis = {
-      version = "0.2.2";
-      core-deps = with coqPackages; [ mathcomp-field_1_9 ];
-      extra-deps = with coqPackages; [ mathcomp_1_9-finmap mathcomp_1_9-bigenough ];
-    };
-    multinomials = {
-      version = "1.3";
-      core-deps = with coqPackages; [ mathcomp-algebra_1_9 ];
-      extra-deps = with coqPackages; [ mathcomp_1_9-finmap mathcomp_1_9-bigenough ];
-    };
-    real-closed = {
-      version = "1.0.3";
-      core-deps = with coqPackages; [ mathcomp-field_1_9 ];
-      extra-deps = with coqPackages; [ mathcomp_1_9-bigenough ];
-    };
-  };
-  "1.8.0" = {
-    finmap.version = "1.2.1";
-    bigenough.version = "1.0.0";
-    analysis = {
-      version = "0.2.2";
-      core-deps = with coqPackages; [ mathcomp-field_1_8 ];
-      extra-deps = with coqPackages; [ mathcomp_1_8-finmap mathcomp_1_8-bigenough ];
-    };
-    multinomials = {
-      version = "1.3";
-      core-deps = with coqPackages; [ mathcomp-algebra_1_8 ];
-      extra-deps = with coqPackages; [ mathcomp_1_8-finmap mathcomp_1_8-bigenough ];
-    };
-    real-closed = {
-      version = "1.0.3";
-      core-deps = with coqPackages; [ mathcomp-field_1_8 ];
-      extra-deps = with coqPackages; [ mathcomp_1_8-bigenough ];
-    };
-    coqeal = {
-      version = "1.0.0";
-      core-deps = with coqPackages; [ mathcomp-algebra_1_8 ];
-      extra-deps = with coqPackages; [ bignums paramcoq mathcomp_1_8-multinomials ];
-    };
-  };
-  "1.7.0" = {
-    finmap.version = "1.1.0";
-    bigenough.version = "1.0.0";
-    analysis = {
-      version = "0.1.0";
-      core-deps = with coqPackages; [ mathcomp-field_1_7 ];
-      extra-deps = with coqPackages; [ mathcomp_1_7-finmap mathcomp_1_7-bigenough ];
-    };
-    multinomials = {
-      version = "1.1";
-      core-deps = with coqPackages; [ mathcomp-algebra_1_7 ];
-      extra-deps = with coqPackages; [ mathcomp_1_7-finmap_1_0 mathcomp_1_7-bigenough ];
-    };
-    real-closed = {
-      version = "1.0.1";
-      core-deps = with coqPackages; [ mathcomp-field_1_7 ];
-      extra-deps = with coqPackages; [ mathcomp_1_7-bigenough ];
-    };
-  };
-};
-
-# generic package generator
-packageGen = {
-  # optional arguments
-  src ? "",
-  owner ? "math-comp",
-  extra-deps ? [],
-  ssreflect ? current-ssreflect,
-  core-deps ? null,
-  compatibleCoqVersions ? null,
-  license ? ssreflect.meta.license,
-  # mandatory
-  package, version ? "broken", version-sha256, description
-  }:
-  let
-    theCompatibleCoqVersions = if compatibleCoqVersions == null
-                               then ssreflect.compatibleCoqVersions
-                               else compatibleCoqVersions;
-    mc-core-deps = if builtins.isNull core-deps then [ssreflect] else core-deps;
-  in
-  { ${package} = let from = src; in
+  ##############################
+  # CONFIGURATION, please edit #
+  ##############################
+  ############################
+  # Packages base delaration #
+  ############################
+  rec-mathcomp-extra-config = {
+    initial = {
+      mathcomp-finmap = version: {
+        meta = {
+          description = "A finset and finmap library";
+          repo = "finmap";
+          homepage = "https://github.com/math-comp/finmap";
+        };
+        passthru.compatibleCoqVersions = flip elem [ "8.8" "8.9" "8.10" "8.11" ];
+      };
 
-  stdenv.mkDerivation rec {
-    inherit version;
-    name = "coq${coq.coq-version}-mathcomp${ssreflect.version}-${package}-${version}";
+      mathcomp-bigenough = version: {
+        meta = {
+          description = "A small library to do epsilon - N reasonning";
+          repo = "bigenough";
+          homepage = "https://github.com/math-comp/bigenough";
+        };
+        passthru.compatibleCoqVersions = flip elem [ "8.7" "8.8" "8.9" "8.10" "8.11" ];
+      };
 
-    src = if from == "" then fetchFromGitHub {
-      owner = owner;
-      repo = package;
-      rev = version;
-      sha256 = version-sha256.${version};
-    } else from;
+      multinomials = version: {
+        buildInputs = [ which ];
+        propagatedBuildInputs = with coqPackages;
+          [ mathcomp.algebra mathcomp-finmap mathcomp-bigenough ];
+        meta = {
+          description = "A Coq/SSReflect Library for Monoidal Rings and Multinomials";
+          repo = "multinomials";
+          homepage = "https://github.com/math-comp/multinomials";
+        };
+        passthru.compatibleCoqVersions = flip elem [ "8.9" "8.10" "8.11" ];
+      };
 
-    propagatedBuildInputs = [ coq ] ++ mc-core-deps ++ extra-deps;
+      mathcomp-analysis = version: {
+        propagatedBuildInputs = with coqPackages;
+          [ mathcomp.field mathcomp-finmap mathcomp-bigenough ];
+        meta = {
+          description = "Analysis library compatible with Mathematical Components";
+          homepage = "https://github.com/math-comp/analysis";
+          repo = "analysis";
+          license = stdenv.lib.licenses.cecill-c;
+        };
+        passthru.compatibleCoqVersions = flip elem ["8.8" "8.9" "8.10" "8.11" ];
+      };
 
-    installFlags = [ "-f" "Makefile.coq" "COQLIB=$(out)/lib/coq/${coq.coq-version}/" ];
+      mathcomp-real-closed = version: {
+        propagatedBuildInputs = with coqPackages;
+          [ coq mathcomp.field  mathcomp-bigenough ];
+        meta = {
+          description = "Mathematical Components Library on real closed fields";
+          repo = "real-closed";
+          homepage = "https://github.com/math-comp/real-closed";
+        };
+        passthru.compatibleCoqVersions = flip elem ["8.8" "8.9" "8.10" "8.11" ];
+      };
 
-    meta = {
-      inherit description;
-      inherit license;
-      inherit (src.meta) homepage;
-      inherit (ssreflect.meta) platforms;
-      maintainers = [ stdenv.lib.maintainers.vbgl ];
-      broken = (version == "broken");
+      coqeal = version: {
+        buildInputs = [ which ];
+        propagatedBuildInputs = with coqPackages;
+          [ mathcomp-algebra bignums paramcoq multinomials ];
+        meta = {
+          description = "CoqEAL - The Coq Effective Algebra Library";
+          homepage = "https://github.com/coqeal/coqeal";
+          license = stdenv.lib.licenses.mit;
+          owner = "CoqEAL";
+        };
+        passthru.compatibleCoqVersions = flip elem [ "8.9" "8.10" "8.11" ];
+      };
     };
 
-    passthru = {
-      inherit version-sha256;
-      compatibleCoqVersions = if meta.broken then _: false
-                              else theCompatibleCoqVersions;
+    ###############################
+    # sha256 of released versions #
+    ###############################
+    sha256 = {
+      mathcomp-finmap = {
+        "1.5.0"          = "0vx9n1fi23592b3hv5p5ycy7mxc8qh1y5q05aksfwbzkk5zjkwnq";
+        "1.4.1"          = "0kx4nx24dml1igk0w0qijmw221r5bgxhwhl5qicnxp7ab3c35s8p";
+        "1.4.0+coq-8.11" = "1fd00ihyx0kzq5fblh9vr8s5mr1kg7p6pk11c4gr8svl1n69ppmb";
+        "1.4.0"          = "0mp82mcmrs424ff1vj3cvd8353r9vcap027h3p0iprr1vkkwjbzd";
+        "1.3.4"          = "0f5a62ljhixy5d7gsnwd66gf054l26k3m79fb8nz40i2mgp6l9ii";
+        "1.3.3"          = "1n844zjhv354kp4g4pfbajix0plqh7yxv6471sgyb46885298am5";
+        "1.3.1"          = "14rvm0rm5hd3pd0srgak3jqmddzfv6n7gdpjwhady5xcgrc7gsx7";
+        "1.2.1"          = "0jryb5dq8js3imbmwrxignlk5zh8gwfb1wr4b1s7jbwz410vp7zf";
+        "1.2.0"          = "0b6wrdr0d7rcnv86s37zm80540jl2wmiyf39ih7mw3dlwli2cyj4";
+        "1.1.0"          = "05df59v3na8jhpsfp7hq3niam6asgcaipg2wngnzxzqnl86srp2a";
+        "1.0.0"          = "0sah7k9qm8sw17cgd02f0x84hki8vj8kdz7h15i7rmz08rj0whpa";
+      };
+      mathcomp-bigenough = {
+        "1.0.0" = "10g0gp3hk7wri7lijkrqna263346wwf6a3hbd4qr9gn8hmsx70wg";
+      };
+      mathcomp-analysis = {
+        "0.2.3" = "0p9mr8g1qma6h10qf7014dv98ln90dfkwn76ynagpww7qap8s966";
+        "0.2.2" = "1d5dwg9di2ppdzfg21zr0a691zigb5kz0lcw263jpyli1nrq7cvk";
+        "0.2.0" = "1186xjxgns4ns1szyi931964bjm0mp126qzlv10mkqqgfw07nhrd";
+        "0.1.0" = "0hwkr2wzy710pcyh274fcarzdx8sv8myp16pv0vq5978nmih46al";
+      };
+      multinomials = {
+        "1.5.1" = "13nlfm2wqripaq671gakz5mn4r0xwm0646araxv0nh455p9ndjs3";
+        "1.5"   = "064rvc0x5g7y1a0nip6ic91vzmq52alf6in2bc2dmss6dmzv90hw";
+        "1.4"   = "0vnkirs8iqsv8s59yx1fvg1nkwnzydl42z3scya1xp1b48qkgn0p";
+        "1.3"   = "0l3vi5n094nx3qmy66hsv867fnqm196r8v605kpk24gl0aa57wh4";
+        "1.2"   = "1mh1w339dslgv4f810xr1b8v2w7rpx6fgk9pz96q0fyq49fw2xcq";
+        "1.1"   = "1q8alsm89wkc0lhcvxlyn0pd8rbl2nnxg81zyrabpz610qqjqc3s";
+        "1.0"   = "1qmbxp1h81cy3imh627pznmng0kvv37k4hrwi2faa101s6bcx55m";
+      };
+      mathcomp-real-closed = {
+        "1.0.5" = "0q8nkxr9fba4naylr5xk7hfxsqzq2pvwlg1j0xxlhlgr3fmlavg2";
+        "1.0.4" = "058v9dj973h9kfhqmvcy9a6xhhxzljr90cf99hdfcdx68fi2ha1b";
+        "1.0.3" = "1xbzkzqgw5p42dx1liy6wy8lzdk39zwd6j14fwvv5735k660z7yb";
+        "1.0.2" = "0097pafwlmzd0gyfs31bxpi1ih04i72nxhn99r93aj20mn7mcsgl";
+        "1.0.1" = "0j81gkjbza5vg89v4n9z598mfdbql416963rj4b8fzm7dp2r4rxg";
+      };
+      coqeal = {
+        "1.0.3" = "0hc63ny7phzbihy8l7wxjvn3haxx8jfnhi91iw8hkq8n29i23v24";
+        "1.0.2" = "1brmf3gj03iky1bcl3g9vx8vknny7xfvs0y2rfr85am0296sxsfj";
+        "1.0.1" = "19jhdrv2yp9ww0h8q73ihb2w1z3glz4waf2d2n45klafxckxi7bm";
+        "1.0.0" = "1had6f1n85lmh9x31avbmgl3m0rsiw9f8ma95qzk5b57fjg5k1ii";
+      };
     };
+
+    ################################
+    # CONSISTENT sets of packages. #
+    ################################
+    for-coq-and-mc = let
+      v5 = {
+        mathcomp-finmap       = "1.5.0";
+        mathcomp-bigenough    = "1.0.0";
+        mathcomp-analysis     = "678d3cc37f5f3c71b1bd550836eb44e3ba2a5459";
+        multinomials           = "1.5.1";
+        mathcomp-real-closed  = "1.0.5";
+        coqeal                = "CohenCyril/bdfc96771644b082e41268edc43d61dc5fda2358";
+      };
+      v4 = v3 // { coqeal = "1.0.3"; };
+      v3 = {
+        mathcomp-finmap       = "1.4.0";
+        mathcomp-bigenough    = "1.0.0";
+        mathcomp-analysis     = "0.2.3";
+        multinomials          = "1.5";
+        mathcomp-real-closed  = "1.0.4";
+        coqeal                = "1.0.0";
+      };
+      v2 = {
+        mathcomp-finmap       = "1.3.4";
+        mathcomp-bigenough    = "1.0.0";
+        mathcomp-analysis     = "0.2.3";
+        multinomials          = "1.4";
+        mathcomp-real-closed  = "1.0.3";
+        coqeal                = "1.0.0";
+      };
+      v1 = {
+        mathcomp-finmap       = "1.1.0";
+        mathcomp-bigenough    = "1.0.0";
+        multinomials          = "1.1";
+        mathcomp-real-closed  = "1.0.1";
+        coqeal                = "1.0.0";
+      };
+    in
+      {
+        "8.11" = {
+          "1.11.0+beta1" = v5;
+          "1.10.0"       = v4 // {mathcomp-finmap = "1.4.0+coq-8.11";};
+        };
+        "8.10" = {
+          "1.11.0+beta1" = v5;
+          "1.10.0"       = v4;
+          "1.9.0"        = removeAttrs v3 ["coqeal"];
+        };
+        "8.9" = {
+          "1.11.0+beta1" = removeAttrs v5 ["mathcomp-analysis"];
+          "1.10.0"       = v4;
+          "1.9.0"        = removeAttrs v3 ["coqeal"];
+          "1.8.0"        = removeAttrs v2 ["coqeal"];
+        };
+        "8.8" = {
+          "1.11.0+beta1" = removeAttrs v5 ["mathcomp-analysis"];
+          "1.10.0"       = removeAttrs v4 ["mathcomp-analysis"];
+          "1.9.0"        = removeAttrs v3 ["coqeal"];
+          "1.8.0"        = removeAttrs v2 ["coqeal"];
+          "1.7.0"        = removeAttrs v1 ["coqeal" "multinomials"];
+        };
+        "8.7" = {
+          "1.11.0+beta1" = removeAttrs v5 ["mathcomp-analysis"];
+          "1.10.0"       = removeAttrs v4 ["mathcomp-analysis"];
+          "1.9.0"        = removeAttrs v3 ["coqeal"];
+          "1.8.0"        = removeAttrs v2 ["coqeal"];
+          "1.7.0"        = removeAttrs v1 ["coqeal" "multinomials"];
+        };
+      };
   };
+
+  ##############################
+  # GENERATION, EDIT WITH CARE #
+  ##############################
+  coq = coqPackages.coq;
+
+  default-attrs = {
+    version = "master";
+    buildInputs = [];
+    propagatedBuildInputs = (with coqPackages; [ ssreflect ]);
+    installFlags = [ "-f" "Makefile.coq" "COQLIB=$(out)/lib/coq/${coq.coq-version}/" ];
+    meta = {
+      inherit (mathcomp.meta) platforms license;
+      owner = "math-comp";
+      maintainers = [ maintainers.vbgl maintainers.cohencyril ];
+    };
+    passthru.compatibleCoqVersions = (_: true);
   };
 
-current-versions = versions.${current-ssreflect.version} or {};
+  pkgUp = recursiveUpdateUntil (path: l: r: !(isAttrs l && isAttrs r) || path == ["src"]);
 
-select = x: mapAttrs (n: pkg: {package = n;} // pkg) (recursiveUpdate param x);
+  # Fixes a partial attribute set using the configuration
+  # in the style of the above mathcomp-extra-config.initial,
+  # and generates a name according to the conventional naming scheme below
+  fix-attrs = pkgcfg:
+    let attrs = pkgUp default-attrs pkgcfg; in
+    pkgUp attrs (rec {
+      name = "coq${coq.coq-version}mathcomp${mathcomp.version}-${attrs.meta.repo or attrs.meta.package or "anonymous"}-${attrs.version}";
+      src = attrs.src or (fetchTarball "${meta.homepage}/archive/${attrs.version}.tar.gz");
+      meta = rec {
+        homepage = attrs.meta.homepage or attrs.src.meta.homepage or "https://github.com/${owner}/${repo}";
+        owner    = attrs.meta.owner or "math-comp";
+        repo     = attrs.meta.repo or attrs.meta.package or "math-comp-nix";
+      };
+    });
 
-for-version = v: suffix: (mapAttrs' (n: pkg:
-        {name = "mathcomp_${suffix}-${n}";
-         value = (packageGen ({
-             ssreflect = coqPackages."mathcomp-ssreflect_${suffix}";
-           } // pkg)).${n};})
-        (select versions.${v}));
+  # Gets a version out of a string, path or attribute set.
+  getVersion = arg:
+    if isFunction arg then (arg {}).version
+    else  if arg == "" then "master"
+    else  if isDerivation arg then arg.drvAttrs.version or "master"
+    else  if isAttrs arg then arg.version or "master"
+    else  if isString arg then head (reverseList (split "/" arg))
+    else  if isPath arg   then (baseNameOf arg)
+    else "master";
 
-all = (for-version "1.7.0" "1_7") //
-      (for-version "1.8.0" "1_8") //
-      (for-version "1.9.0" "1_9") //
-     (recurseIntoAttrs (mapDerivationAttrset dontDistribute (
-        mapAttrs' (n: pkg: {name = "mathcomp-${n}"; value = (packageGen pkg).${n};})
-              (select current-versions))));
+  # Converts a string, path or attribute set into an override function
+  # It tries to fill the `old` argument of the override function using
+  # `mathcomp-extra-config.initial` first and finishes with `fix-attrs`
+  rec-mathcomp-extra-override = generic: old: let
+    version = getVersion generic;
+    package = old.meta.package or "math-comp-nix";
+    cfg = pkgUp ((mathcomp-extra-config.initial.${package} or (_: {})) version) old
+          // { inherit version; };
+    fix = attrs: fix-attrs (pkgUp cfg attrs);
+  in
+    if isFunction generic then fix (generic cfg)
+    else  if generic == null || generic == "" then fix {}
+    else  if isDerivation generic then fix generic.drvAttrs
+    else  if isAttrs generic then fix generic
+    else  if generic == "broken" then fix { meta.broken = true; passthru.compatibleCoqVersions = _: false; }
+    else  let fixedcfg = fix cfg; in fixedcfg // (
+      if isString generic then
+        if (mathcomp-extra-config.sha256.${package} or {})?${generic} then {
+          src = fetchFromGitHub {
+            inherit (fixedcfg.meta) owner repo;
+            rev = version;
+            sha256 = mathcomp-extra-config.sha256.${package}.${version};
+          };
+        }
+        else  let splitted = filter isString (split "/" generic); in {
+        src = fetchTarball
+          ("https://github.com/" +
+           (if length splitted == 1 then "${fixedcfg.meta.owner}/${fixedcfg.meta.repo}/archive/${version}.tar.gz"
+            else "${head splitted}/${fixedcfg.meta.repo}/archive/${concatStringsSep "/" (tail splitted)}.tar.gz"));
+        }
+      else  if isPath generic then { src = generic; }
+      else abort "${toString generic} not a legitimate generic version/override");
+
+  # applies mathcomp-extra-config.for-coq-and-mc to the current mathcomp version
+  for-this = mathcomp-extra-config.for-coq-and-mc.${coq.coq-version}.${mathcomp.version} or {};
+
+  # specializes mathcomp-extra to the current mathcomp version.
+  rec-current-mathcomp-extra = package: mathcomp-extra package (for-this.${package} or {});
 in
-{
-mathcompExtraGen = packageGen;
-mathcomp_1_7-finmap_1_0 =
-  (packageGen (select {finmap = {version = "1.0.0";
-                                 ssreflect = coqPackages.mathcomp-ssreflect_1_7;};
-                      }).finmap).finmap;
-multinomials = all.mathcomp-multinomials;
-coqeal = all.mathcomp-coqeal;
-} // all
+  {
+    mathcomp-extra-override = rec-mathcomp-extra-override;
+    mathcomp-extra-config   = rec-mathcomp-extra-config;
+    current-mathcomp-extra  = rec-current-mathcomp-extra;
+    mathcomp-extra          = package: version:
+      stdenv.mkDerivation (mathcomp-extra-override version {meta = {inherit package;};});
+
+    mathcomp-finmap       = current-mathcomp-extra "mathcomp-finmap";
+    mathcomp-analysis     = current-mathcomp-extra "mathcomp-analysis";
+    mathcomp-bigenough    = current-mathcomp-extra "mathcomp-bigenough";
+    multinomials          = current-mathcomp-extra "multinomials";
+    mathcomp-real-closed  = current-mathcomp-extra "mathcomp-real-closed";
+    coqeal                = current-mathcomp-extra "coqeal";
+
+    mathcomp-extra-fast    = map (pkg: current-mathcomp-extra pkg)
+      (attrNames (filterAttrs (pkg: config: !(config?slow && config.slow)) for-this));
+    mathcomp-extra-all    = map (pkg: current-mathcomp-extra pkg) (attrNames for-this);
+  }