chore: Update `lean4-nix`

LICENSE

@@ -1,190 +1,674 @@
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+                    GNU GENERAL PUBLIC LICENSE
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+                       Version 3, 29 June 2007
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+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
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+propagate that work, subject to this License.  You are not responsible
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+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
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+
+  You may not impose any further restrictions on the exercise of the
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+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
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+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
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+
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+patent license under the contributor's essential patent claims, to
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+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
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+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
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+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
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+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

Pantograph/Frontend/Elab.lean

@@ -122,13 +122,6 @@ protected def goalStateAfter (t : TacticInvocation) : IO (List Format) := do
 protected def ppExpr (t : TacticInvocation) (e : Expr) : IO Format :=
   t.runMetaM (fun _ => do Meta.ppExpr (← instantiateMVars e))
 
-protected def usedConstants (t: TacticInvocation) : NameSet :=
-  let info := t.info
-  info.goalsBefore
-    |>.filterMap info.mctxAfter.getExprAssignmentCore?
-    |>.map Expr.getUsedConstantsAsSet
-    |>.foldl .union .empty
-
 end TacticInvocation
 
 /-- Analogue of `Lean.Elab.InfoTree.findInfo?`, but that returns a list of all results. -/
@@ -165,13 +158,7 @@ def collectTacticsFromCompilationStep (step : CompilationStep) : IO (List Protoc
     let tactic ← invocation.ctx.runMetaM {} do
       let t ← PrettyPrinter.ppTactic ⟨invocation.info.stx⟩
       return t.pretty
-    let usedConstants := invocation.usedConstants.toArray.map λ n => n.toString
+    return { goalBefore, goalAfter, tactic }
-    return {
-      goalBefore,
-      goalAfter,
-      tactic,
-      usedConstants,
-    }
 
 structure InfoWithContext where
   info: Elab.Info

Pantograph/Protocol.lean

@@ -298,9 +298,6 @@ structure InvokedTactic where
   goalBefore: String
   goalAfter: String
   tactic: String
-
-  -- List of used constants
-  usedConstants: Array String
   deriving Lean.ToJson
 
 structure CompilationUnit where

Test/Integration.lean

@@ -167,8 +167,8 @@ example : ∀ (p: Prop), p → p := by
 
 def test_frontend_process : Test :=
   [
-    let file := "example : ∀ (p q: Prop), p → p ∨ q := by\n  intro p q h\n  exact Or.inl h"
+    let file := "example : ∀ (p: Prop), p → p := by\n  intro p h\n  exact h"
-    let goal1 := "p q : Prop\nh : p\n⊢ p ∨ q"
+    let goal1 := "p : Prop\nh : p\n⊢ p"
     step "frontend.process"
       [
         ("file", .str file),
@@ -180,16 +180,14 @@ def test_frontend_process : Test :=
          boundary := (0, file.utf8ByteSize),
          invocations? := .some [
            {
-             goalBefore := "⊢ ∀ (p q : Prop), p → p ∨ q",
+             goalBefore := "⊢ ∀ (p : Prop), p → p",
              goalAfter := goal1,
-             tactic := "intro p q h",
+             tactic := "intro p h",
-             usedConstants := #[],
            },
            {
              goalBefore := goal1 ,
              goalAfter := "",
-             tactic := "exact Or.inl h",
+             tactic := "exact h",
-             usedConstants := #["Or.inl"],
            },
          ]
        }],

flake.lock

@@ -5,11 +5,11 @@
         "nixpkgs-lib": "nixpkgs-lib"
       },
       "locked": {
-        "lastModified": 1709336216,
+        "lastModified": 1727826117,
-        "narHash": "sha256-Dt/wOWeW6Sqm11Yh+2+t0dfEWxoMxGBvv3JpIocFl9E=",
+        "narHash": "sha256-K5ZLCyfO/Zj9mPFldf3iwS6oZStJcU4tSpiXTMYaaL0=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "f7b3c975cf067e56e7cda6cb098ebe3fb4d74ca2",
+        "rev": "3d04084d54bedc3d6b8b736c70ef449225c361b1",
         "type": "github"
       },
       "original": {
@@ -18,40 +18,40 @@
         "type": "github"
       }
     },
-    "flake-utils": {
+    "flake-parts_2": {
-      "locked": {
-        "lastModified": 1656928814,
-        "narHash": "sha256-RIFfgBuKz6Hp89yRr7+NR5tzIAbn52h8vT6vXkYjZoM=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "7e2a3b3dfd9af950a856d66b0a7d01e3c18aa249",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
-    "lean": {
       "inputs": {
-        "flake-utils": "flake-utils",
+        "nixpkgs-lib": "nixpkgs-lib_2"
-        "nixpkgs": "nixpkgs",
-        "nixpkgs-cadical": "nixpkgs-cadical",
-        "nixpkgs-old": "nixpkgs-old"
       },
       "locked": {
-        "lastModified": 1727749878,
+        "lastModified": 1727826117,
-        "narHash": "sha256-O2Egyh2D0TfQWzQKfHUeAh7qAjMfeLVwXwGUw5QqcvE=",
+        "narHash": "sha256-K5ZLCyfO/Zj9mPFldf3iwS6oZStJcU4tSpiXTMYaaL0=",
-        "owner": "leanprover",
+        "owner": "hercules-ci",
-        "repo": "lean4",
+        "repo": "flake-parts",
-        "rev": "dc2533473114eb8656439ff2b9335209784aa640",
+        "rev": "3d04084d54bedc3d6b8b736c70ef449225c361b1",
         "type": "github"
       },
       "original": {
-        "owner": "leanprover",
+        "owner": "hercules-ci",
-        "ref": "v4.12.0",
+        "repo": "flake-parts",
-        "repo": "lean4",
+        "type": "github"
+      }
+    },
+    "lean4-nix": {
+      "inputs": {
+        "flake-parts": "flake-parts_2",
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1729990097,
+        "narHash": "sha256-3RUciZy/VMbyp9v1f8oba/oQ8bWWVh2+1wsuUah3ryE=",
+        "owner": "lenianiva",
+        "repo": "lean4-nix",
+        "rev": "6919763f186c7b0d39907203a649078ff3a4eb71",
+        "type": "github"
+      },
+      "original": {
+        "owner": "lenianiva",
+        "repo": "lean4-nix",
         "type": "github"
       }
     },
@@ -74,83 +74,56 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1686089707,
+        "lastModified": 1728500571,
-        "narHash": "sha256-LTNlJcru2qJ0XhlhG9Acp5KyjB774Pza3tRH0pKIb3o=",
+        "narHash": "sha256-dOymOQ3AfNI4Z337yEwHGohrVQb4yPODCW9MDUyAc4w=",
-        "owner": "NixOS",
+        "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "af21c31b2a1ec5d361ed8050edd0303c31306397",
+        "rev": "d51c28603def282a24fa034bcb007e2bcb5b5dd0",
         "type": "github"
       },
       "original": {
-        "owner": "NixOS",
+        "owner": "nixos",
-        "ref": "nixpkgs-unstable",
+        "ref": "nixos-24.05",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
-    "nixpkgs-cadical": {
-      "locked": {
-        "lastModified": 1722221733,
-        "narHash": "sha256-sga9SrrPb+pQJxG1ttJfMPheZvDOxApFfwXCFO0H9xw=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "12bf09802d77264e441f48e25459c10c93eada2e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "12bf09802d77264e441f48e25459c10c93eada2e",
-        "type": "github"
-      }
-    },
     "nixpkgs-lib": {
       "locked": {
-        "dir": "lib",
+        "lastModified": 1727825735,
-        "lastModified": 1709237383,
+        "narHash": "sha256-0xHYkMkeLVQAMa7gvkddbPqpxph+hDzdu1XdGPJR+Os=",
-        "narHash": "sha256-cy6ArO4k5qTx+l5o+0mL9f5fa86tYUX3ozE1S+Txlds=",
+        "type": "tarball",
-        "owner": "NixOS",
+        "url": "https://github.com/NixOS/nixpkgs/archive/fb192fec7cc7a4c26d51779e9bab07ce6fa5597a.tar.gz"
-        "repo": "nixpkgs",
-        "rev": "1536926ef5621b09bba54035ae2bb6d806d72ac8",
-        "type": "github"
       },
       "original": {
-        "dir": "lib",
+        "type": "tarball",
-        "owner": "NixOS",
+        "url": "https://github.com/NixOS/nixpkgs/archive/fb192fec7cc7a4c26d51779e9bab07ce6fa5597a.tar.gz"
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
       }
     },
-    "nixpkgs-old": {
+    "nixpkgs-lib_2": {
-      "flake": false,
       "locked": {
-        "lastModified": 1581379743,
+        "lastModified": 1727825735,
-        "narHash": "sha256-i1XCn9rKuLjvCdu2UeXKzGLF6IuQePQKFt4hEKRU5oc=",
+        "narHash": "sha256-0xHYkMkeLVQAMa7gvkddbPqpxph+hDzdu1XdGPJR+Os=",
-        "owner": "NixOS",
+        "type": "tarball",
-        "repo": "nixpkgs",
+        "url": "https://github.com/NixOS/nixpkgs/archive/fb192fec7cc7a4c26d51779e9bab07ce6fa5597a.tar.gz"
-        "rev": "34c7eb7545d155cc5b6f499b23a7cb1c96ab4d59",
-        "type": "github"
       },
       "original": {
-        "owner": "NixOS",
+        "type": "tarball",
-        "ref": "nixos-19.03",
+        "url": "https://github.com/NixOS/nixpkgs/archive/fb192fec7cc7a4c26d51779e9bab07ce6fa5597a.tar.gz"
-        "repo": "nixpkgs",
-        "type": "github"
       }
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1711703276,
+        "lastModified": 1729691686,
-        "narHash": "sha256-iMUFArF0WCatKK6RzfUJknjem0H9m4KgorO/p3Dopkk=",
+        "narHash": "sha256-BAuPWW+9fa1moZTU+jFh+1cUtmsuF8asgzFwejM4wac=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "d8fe5e6c92d0d190646fb9f1056741a229980089",
+        "rev": "32e940c7c420600ef0d1ef396dc63b04ee9cad37",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
-        "ref": "nixos-unstable",
+        "ref": "nixos-24.05",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -158,7 +131,7 @@
     "root": {
       "inputs": {
         "flake-parts": "flake-parts",
-        "lean": "lean",
+        "lean4-nix": "lean4-nix",
         "lspec": "lspec",
         "nixpkgs": "nixpkgs_2"
       }

flake.nix

@@ -2,12 +2,9 @@
   description = "Pantograph";
 
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-24.05";
     flake-parts.url = "github:hercules-ci/flake-parts";
-    lean = {
+    lean4-nix.url = "github:lenianiva/lean4-nix";
-      # Do not follow input's nixpkgs since it could cause build failures
-      url = "github:leanprover/lean4?ref=v4.12.0";
-    };
     lspec = {
       url = "github:argumentcomputer/LSpec?ref=504a8cecf8da601b9466ac727aebb6b511aae4ab";
       flake = false;
@@ -18,7 +15,7 @@
     self,
     nixpkgs,
     flake-parts,
-    lean,
+    lean4-nix,
     lspec,
     ...
   } : flake-parts.lib.mkFlake { inherit inputs; } {
@@ -29,13 +26,16 @@
       "x86_64-darwin"
     ];
     perSystem = { system, pkgs, ... }: let
-      leanPkgs = lean.packages.${system}.deprecated;
+      pkgs = import nixpkgs {
-      lspecLib = leanPkgs.buildLeanPackage {
+        inherit system;
+        overlays = [ (lean4-nix.readToolchainFile ./lean-toolchain) ];
+      };
+      lspecLib = pkgs.lean.buildLeanPackage {
         name = "LSpec";
         roots = [ "Main" "LSpec" ];
         src = "${lspec}";
       };
-      project = leanPkgs.buildLeanPackage {
+      project = pkgs.lean.buildLeanPackage {
         name = "Pantograph";
         roots = [ "Pantograph" ];
         src = pkgs.lib.cleanSource (pkgs.lib.cleanSourceWith {
@@ -46,7 +46,7 @@
             !(pkgs.lib.hasSuffix "Repl.lean" path);
         });
       };
-      repl = leanPkgs.buildLeanPackage {
+      repl = pkgs.lean.buildLeanPackage {
         name = "Repl";
         roots = [ "Main" "Repl" ];
         deps = [ project ];
@@ -57,7 +57,7 @@
             !(pkgs.lib.hasSuffix ".md" path);
         });
       };
-      test = leanPkgs.buildLeanPackage {
+      test = pkgs.lean.buildLeanPackage {
         name = "Test";
         # NOTE: The src directory must be ./. since that is where the import
         # root begins (e.g. `import Test.Environment` and not `import
@@ -72,24 +72,25 @@
       };
     in rec {
       packages = {
-        inherit (leanPkgs) lean lean-all;
+        inherit (pkgs.lean) lean lean-all;
         inherit (project) sharedLib;
         inherit (repl) executable;
         default = repl.executable;
       };
       legacyPackages = {
-        inherit project leanPkgs;
+        inherit project;
+        leanPkgs = pkgs.lean;
       };
       checks = {
         test = pkgs.runCommand "test" {
-          buildInputs = [ test.executable leanPkgs.lean-all ];
+          buildInputs = [ test.executable pkgs.lean.lean-all ];
         } ''
           #export LEAN_SRC_PATH="${./.}"
           ${test.executable}/bin/test > $out
         '';
       };
       devShells.default = pkgs.mkShell {
-        buildInputs = [ leanPkgs.lean-all leanPkgs.lean ];
+        buildInputs = [ pkgs.lean.lean-all pkgs.lean.lean ];
       };
     };
   };