https://github.com/FluxML/Tracker.jl/commit/f6550ba38a9ea5802e2de4fa9c939929ba711f0d.patch
from an upstream pull request
https://github.com/FluxML/Tracker.jl/pull/94


From f6550ba38a9ea5802e2de4fa9c939929ba711f0d Mon Sep 17 00:00:00 2001
From: Michael Abbott <me@escbook>
Date: Wed, 3 Feb 2021 22:58:33 +0100
Subject: [PATCH] two fixes for 1.6

---
 src/lib/array.jl | 2 +-
 src/lib/real.jl  | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/lib/array.jl b/src/lib/array.jl
index 92f2b39..f8cbbac 100644
--- a/src/lib/array.jl
+++ b/src/lib/array.jl
@@ -298,7 +298,7 @@ Base.reverse(xs::TrackedArray; dims) = track(reverse, xs, dims = dims)
 @grad reverse(xs; dims) = reverse(data(xs), dims = dims), Δ -> (reverse(Δ, dims = dims), nothing)
 Base.reverse(xs::TrackedVector) = track(reverse, xs)
 @grad reverse(xs::TrackedVector) = reverse(data(xs)), Δ -> (reverse(Δ),)
-Base.reverse(xs::TrackedVector, start, stop) = track(reverse, xs, start, stop)
+Base.reverse(xs::TrackedVector, start::Integer, stop::Integer) = track(reverse, xs, start, stop)
 @grad reverse(xs, start, stop) = reverse(data(xs), start, stop), Δ -> (reverse(Δ, start, stop), nothing, nothing)
 
 function _kron(mat1::AbstractMatrix,mat2::AbstractMatrix)
diff --git a/src/lib/real.jl b/src/lib/real.jl
index 737afd8..e1975ac 100644
--- a/src/lib/real.jl
+++ b/src/lib/real.jl
@@ -55,6 +55,7 @@ for f in :[isinf, isnan, isfinite].args
 end
 
 Printf.fix_dec(x::TrackedReal, n::Int, a...) = Printf.fix_dec(data(x), n, a...)
+Printf.tofloat(x::TrackedReal) = Printf.tofloat(data(x))
 
 Base.float(x::TrackedReal) = x
 
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<div class='path'>path: <a href='/guix/log/?id=c701592f20beec9a5c1edc19a2bbb11ab19e6a4c'>root</a>/<a href='/guix/log/gnu?id=c701592f20beec9a5c1edc19a2bbb11ab19e6a4c'>gnu</a>/<a href='/guix/log/gnu/packages?id=c701592f20beec9a5c1edc19a2bbb11ab19e6a4c'>packages</a>/<a href='/guix/log/gnu/packages/dezyne.scm?id=c701592f20beec9a5c1edc19a2bbb11ab19e6a4c'>dezyne.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/dezyne.scm?id=c701592f20beec9a5c1edc19a2bbb11ab19e6a4c&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-09-08 23:09:11 +0200'>2023-09-08</span></td><td><a href='/guix/commit/gnu/packages/dezyne.scm?id=e2e5df596f5e682d78043b12463cc47d14291ba9'>gnu: dezyne: Update to 2.17.6.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/dezyne.scm (dezyne): Update to 2.17.6.
</span></span></td><td>Janneke Nieuwenhuizen</td></tr>
<tr><td><span title='2023-08-11 17:18:04 +0200'>2023-08-11</span></td><td><a href='/guix/commit/gnu/packages/dezyne.scm?id=77251c5f5af193dcd031dffef744001cfc48f7e5'>gnu: dezyne: Update to 2.17.5.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/dezyne.scm (dezyne): Update to 2.17.5.
</span></span></td><td>Janneke Nieuwenhuizen</td></tr>
<tr><td><span title='2023-06-26 13:25:06 +0200'>2023-06-26</span></td><td><a href='/guix/commit/gnu/packages/dezyne.scm?id=1bc878ded2ea349384da6a72d4b8326c63c794b4'>gnu: dezyne: Update to 2.17.3.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/patches/dezyne-add-missing-shebangs.patch: Remove file.
* gnu/local.mk (dist_patch_DATA): Remove it.
* gnu/packages/dezyne.scm (dezyne): Update to 2.17.3.
[source]: Remove patch, update hash.
</span></span></td><td>Janneke Nieuwenhuizen</td></tr>
<tr><td><span title='2023-04-24 21:04:11 +0200'>2023-04-24</span></td><td><a href='/guix/commit/gnu/packages/dezyne.scm?id=5eb1d1b6482e29239f1d40dfcb815cdc12a2bdf0'>gnu: dezyne: Add patch to avoid "Exec format error".</a><span class='msg-avail'>...<span class='msg-tooltip'>This fixes

    In execvp of ./test/all/parse_import_order/run: Exec format error

on shell scripts that lack a shebang.

* gnu/packages/patches/dezyne-add-missing-shebangs.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/dezyne.scm (dezyne): Use it.
</span></span></td><td>Janneke Nieuwenhuizen</td></tr>
<tr><td><span title='2023-04-24 15:19:16 +0200'>2023-04-24</span></td><td><a href='/guix/commit/gnu/packages/dezyne.scm?id=d0575a984721f175f10c3d925470a90424c17811'>gnu: dezyne: Update to 2.17.2.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/dezyne.scm (dezyne): Update to 2.17.2.
</span></span></td><td>Janneke Nieuwenhuizen</td></tr>
<tr><td><span title='2023-01-27 20:38:49 +0100'>2023-01-27</span></td><td><a href='/guix/commit/gnu/packages/dezyne.scm?id=35e626f312aa5f8c9c4c3f06751db5e3394c66b6'>gnu: dezyne: Update to 2.17.1.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/dezyne.scm (dezyne): Update to 2.17.1.
</span></span></td><td>Jan (janneke) Nieuwenhuizen</td></tr>
<tr><td><span title='2023-01-23 13:10:59 +0100'>2023-01-23</span></td><td><a href='/guix/commit/gnu/packages/dezyne.scm?id=be07379630c09d071a166caecefa34cadec515cb'>gnu: dezyne: Update to 2.17.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/dezyne.scm (dezyne): Update to 2.17.0.
</span></span></td><td>Jan (janneke) Nieuwenhuizen</td></tr>
<tr><td><span title='2023-01-13 13:56:22 +0100'>2023-01-13</span></td><td><a href='/guix/commit/gnu/packages/dezyne.scm?id=eb329c946181557f3dd63195d4938592ef9f4f98'>gnu: dezyne: Update to 2.16.3.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/dezyne.scm (dezyne): Update to 2.16.3.
</span></span></td><td>Jan (janneke) Nieuwenhuizen</td></tr>
<tr><td><span title='2022-10-17 14:55:45 +0200'>2022-10-17</span></td><td><a href='/guix/commit/gnu/packages/dezyne.scm?id=fd4cbcbed7ed5ae29fb5bb5fd5c9865d96240a20'>gnu: dezyne: Update to 2.16.2.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/dezyne.scm (dezyne): Update to 2.16.2.
</span></span></td><td>Jan (janneke) Nieuwenhuizen</td></tr>
<tr><td><span title='2022-09-13 15:08:41 +0200'>2022-09-13</span></td><td><a href='/guix/commit/gnu/packages/dezyne.scm?id=7a980bbaf44bb6c3278bc1c9606681135f3ff62d'>gnu: dezyne: Update to 2.16.1.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/dezyne.scm (dezyne): Update to 2.16.1.
</span></span></td><td>Jan (janneke) Nieuwenhuizen</td></tr>
<tr><td><span title='2022-08-18 16:10:22 +0200'>2022-08-18</span></td><td><a href='/guix/commit/gnu/packages/dezyne.scm?id=ceacf8e32f3671ab598c71e691b580a72af4e16e'>gnu: dezyne: Update to 2.16.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/dezyne.scm (dezyne): Update to 2.16.0.
</span></span></td><td>Jan (janneke) Nieuwenhuizen</td></tr>